diff --git a/src-tauri/migrations/init/asset_prices_up.sql b/src-tauri/migrations/init/asset_prices_up.sql
index 17fd5d6..fff7d03 100644
--- a/src-tauri/migrations/init/asset_prices_up.sql
+++ b/src-tauri/migrations/init/asset_prices_up.sql
@@ -6,7 +6,8 @@ CREATE TABLE IF NOT EXISTS asset_prices (
 	symbol TEXT NOT NULL,
 	-- if amount > 0, price is cost price, else price is sell price
 	price REAL NOT NULL,
-	-- createdAt in assets_v2
-	createdAt DATETIME NOT NULL
+	-- assetCreatedAt in assets_v2
+	assetCreatedAt DATETIME NOT NULL,
+	updatedAt DATETIME NOT NULL
 );
 CREATE UNIQUE INDEX IF NOT EXISTS unique_uuid_asset_id ON asset_prices (uuid, assetID);
diff --git a/src-tauri/migrations/v03t04/asset_prices_up.sql b/src-tauri/migrations/v03t04/asset_prices_up.sql
index 17fd5d6..fff7d03 100644
--- a/src-tauri/migrations/v03t04/asset_prices_up.sql
+++ b/src-tauri/migrations/v03t04/asset_prices_up.sql
@@ -6,7 +6,8 @@ CREATE TABLE IF NOT EXISTS asset_prices (
 	symbol TEXT NOT NULL,
 	-- if amount > 0, price is cost price, else price is sell price
 	price REAL NOT NULL,
-	-- createdAt in assets_v2
-	createdAt DATETIME NOT NULL
+	-- assetCreatedAt in assets_v2
+	assetCreatedAt DATETIME NOT NULL,
+	updatedAt DATETIME NOT NULL
 );
 CREATE UNIQUE INDEX IF NOT EXISTS unique_uuid_asset_id ON asset_prices (uuid, assetID);
diff --git a/src/middlelayers/charts.ts b/src/middlelayers/charts.ts
index 31bb197..1f7937b 100644
--- a/src/middlelayers/charts.ts
+++ b/src/middlelayers/charts.ts
@@ -37,7 +37,7 @@ export async function loadAllAssetActionsBySymbol(symbol: string): Promise<Asset
 
 export async function updateAssetPrice(uuid: string, assetID: number, symbol: string, price: number, createdAt: string) {
 	const db = await getDatabase()
-	await db.execute(`INSERT OR REPLACE INTO ${ASSETS_PRICE_TABLE_NAME} (uuid, assetID, symbol, price, createdAt) VALUES (?, ?, ?, ?, ?)`, [
+	await db.execute(`INSERT OR REPLACE INTO ${ASSETS_PRICE_TABLE_NAME} (uuid, assetID, symbol, price, assetCreatedAt) VALUES (?, ?, ?, ?, ?)`, [
 		uuid, assetID, symbol, price, createdAt
 	])
 }
@@ -169,10 +169,27 @@ export function queryAllAssetPrices(): Promise<AssetPriceModel[]> {
 	return queryAssetPrices()
 }
 
-async function queryAssetPrices(symbol?: string): Promise<AssetPriceModel[]> {
+export function queryAssetPricesAfterAssetCreatedAt(createdAt?: number): Promise<AssetPriceModel[]> {
+	const ts = createdAt ? new Date(createdAt).toISOString() : undefined
+	return queryAssetPrices(undefined, ts)
+}
+
+export function queryAssetPricesAfterUpdatedAt(updatedAt?: number): Promise<AssetPriceModel[]> {
+	const ts = updatedAt ? new Date(updatedAt).toISOString() : undefined
+	return queryAssetPrices(undefined, undefined, ts)
+}
+
+async function queryAssetPrices(symbol?: string, assetCreated?: string, updatedAt?: string): Promise<AssetPriceModel[]> {
 	const db = await getDatabase()
 	const params = symbol ? [symbol] : []
-	const prices = await db.select<AssetPriceModel[]>(`SELECT * FROM ${ASSETS_PRICE_TABLE_NAME} WHERE 1=1 ${symbol ? 'and symbol = ?' : ''}`, params)
+	if (assetCreated) {
+		params.push(assetCreated)
+	}
+	if (updatedAt) {
+		params.push(updatedAt)
+	}
+	const prices = await db.select<AssetPriceModel[]>(`SELECT * FROM ${ASSETS_PRICE_TABLE_NAME} WHERE 1=1 ${symbol ? 'and symbol = ?' : ''} ${assetCreated ? 'and assetCreatedAt > ?' : ''} ${updatedAt ? 'and updatedAt > ?' : ''}`, params)
+
 	return prices
 }
 
@@ -215,6 +232,12 @@ export async function queryAssetsAfterCreatedAt(createdAt?: number): Promise<Ass
 	return assets
 }
 
+export async function queryAssetsByIDs(ids: number[]): Promise<AssetModel[]> {
+	const db = await getDatabase()
+	const assets = await db.select<AssetModel[]>(`SELECT * FROM ${ASSETS_TABLE_NAME} WHERE id in (${ids.join(",")})`)
+	return assets
+}
+
 async function queryAssetByUUID(id: string): Promise<AssetModel[]> {
 	const db = await getDatabase()
 	const assets = await db.select<AssetModel[]>(`SELECT * FROM ${ASSETS_TABLE_NAME} WHERE uuid = ?`, [id])
diff --git a/src/middlelayers/cloudsync.ts b/src/middlelayers/cloudsync.ts
index 4a58c58..9e466cf 100644
--- a/src/middlelayers/cloudsync.ts
+++ b/src/middlelayers/cloudsync.ts
@@ -1,8 +1,8 @@
 import { Polybase } from '@polybase/client'
 import { getDatabase, saveModelsToDatabase } from './database'
 import { v4 as uuidv4 } from 'uuid'
-import { ASSETS_TABLE_NAME, queryAssetsAfterCreatedAt } from './charts'
-import { AssetModel, CloudAssetModel, CloudSyncConfiguration } from './types'
+import { ASSETS_PRICE_TABLE_NAME, ASSETS_TABLE_NAME, queryAssetPricesAfterAssetCreatedAt, queryAssetPricesAfterUpdatedAt, queryAssetsAfterCreatedAt, queryAssetsByIDs } from './charts'
+import { AssetModel, AssetPriceModel, CloudAssetModel, CloudSyncConfiguration, ExportAssetModel } from './types'
 import { getCloudSyncConfiguration as getCloudSyncConfigurationModel, saveCloudSyncConfiguration as saveCloudSyncConfigurationModel } from './configuration'
 import _ from 'lodash'
 import Database from 'tauri-plugin-sql-api'
@@ -185,14 +185,14 @@ export async function getPublicKey() {
 }
 
 // list all assets from cloud
-async function dumpAssetsFromCloudAfterCreatedAt(createdAt?: number): Promise<AssetModel[]> {
+async function dumpAssetsFromCloudAfterCreatedAt(createdAt?: number): Promise<ExportAssetModel[]> {
 	const p = await getPolybaseDB()
 	// filter assets > createdAt from cloud, if createdAt is not provided, get all assets
 	const records = await p.collection<CloudAssetModel>(RECORD_COLLECTION_NAME).where("createdAt", ">=", createdAt || 0).sort("createdAt", "desc").get()
 
-	const needSyncedAssets = _(records.data).
+	return _(records.data).
 		map('data').
-		map(record => record.records ? JSON.parse(record.records) as AssetModel[] : []).
+		map(record => record.records ? JSON.parse(record.records) as ExportAssetModel[] : []).
 		flatten().
 		compact().
 		map((record) => ({
@@ -204,22 +204,37 @@ async function dumpAssetsFromCloudAfterCreatedAt(createdAt?: number): Promise<As
 			value: record.value,
 			price: record.price,
 			wallet: record.wallet,
+			costPrice: record.costPrice,
 		}))
 		.value()
-	return _(needSyncedAssets).map((asset) => ({
-		id: asset.id,
-		uuid: asset.uuid,
-		createdAt: asset.createdAt,
-		symbol: asset.symbol,
-		amount: asset.amount,
-		value: asset.value,
-		price: asset.price,
-		wallet: asset.wallet,
-	})).value()
 }
 
-async function dumpAssetsFromDBAfterCreatedAt(createdAt?: number): Promise<AssetModel[]> {
-	return queryAssetsAfterCreatedAt(createdAt)
+async function dumpAssetsFromDBAfterCreatedAt(createdAt?: number): Promise<ExportAssetModel[]> {
+	const models = await queryAssetsAfterCreatedAt(createdAt)
+	const prices = await queryAssetPricesAfterAssetCreatedAt(createdAt)
+
+
+	const getExportAssetMode = (ms: AssetModel[], ps: AssetPriceModel[]): ExportAssetModel[] => {
+		const priceMap = _(ps).mapKeys('assetID').mapValues('price').value()
+		return _(ms).map((model) => {
+			const costPrice = priceMap[model.id]
+			return {
+				...model,
+				costPrice,
+			} as ExportAssetModel
+		}).value()
+	}
+
+	const afterCreatedAt = getExportAssetMode(models, prices)
+
+	const afterAssetIds = _(afterCreatedAt).map('id').value()
+
+	const afterUpdatedAt = await queryAssetPricesAfterUpdatedAt(createdAt)
+	const updatedAssetIds = _(afterUpdatedAt).filter(a => !afterAssetIds.includes(a.assetID)).map('assetID').value()
+	const updatedAssets = await queryAssetsByIDs(updatedAssetIds)
+	const afterUpdatedAtAssets = getExportAssetMode(updatedAssets, afterUpdatedAt)
+
+	return [...afterCreatedAt, ...afterUpdatedAtAssets]
 }
 
 export async function syncAssetsToCloudAndLocal(publicKey: string, createdAt?: number): Promise<number> {
@@ -241,12 +256,10 @@ export async function syncAssetsToCloudAndLocal(publicKey: string, createdAt?: n
 	const needSyncedAssetsToDB = _(cloudAssets).differenceBy(localAssets, 'uuid').value()
 	if (needSyncedAssetsToDB.length > 0) {
 		// write data to local
-		console.log('needSyncedAssetsToDB', needSyncedAssetsToDB)
-
 		synced += await writeAssetsToDB(d, needSyncedAssetsToDB)
 	}
 
-	await updateLastSyncTime(d, publicKey)
+	await markAsSynced(d, publicKey)
 	return synced
 }
 
@@ -259,24 +272,48 @@ export async function forceSyncAssetsToCloudFromLocal(publicKey: string): Promis
 	const cloudAssets = await dumpAssetsFromCloudAfterCreatedAt()
 
 	let synced = 0
+	// data in cloud not equal to local, need to be removed
+	const changedDataInLocal = _(localAssets).filter(a => {
+		const dataInCloud = _(cloudAssets).find(c => c.uuid === a.uuid && c.symbol === a.symbol && c.wallet === a.wallet)
+		if (!dataInCloud) {
+			return false
+		}
+		if (dataInCloud.amount !== a.amount) {
+			return true
+		}
+		if (dataInCloud.value !== a.value) {
+			return true
+		}
 
-	// add data to cloud if not in cloud
-	const needSyncedAssetsToCloud = _(localAssets).differenceBy(cloudAssets, 'uuid').value()
-	if (needSyncedAssetsToCloud.length > 0) {
-		// write data to cloud
-		synced += await writeAssetsToCloud(publicKey, needSyncedAssetsToCloud)
-	}
+		if (dataInCloud.price !== a.price) {
+			return true
+		}
+		if (dataInCloud.costPrice !== a.costPrice) {
+			return true
+		}
+		return false
+	}).value()
+	const getModelKey = (a: ExportAssetModel) => a.uuid + a.symbol + a.wallet
 	// remove data in cloud if not in local
 	const needRemovedInCloud = _(cloudAssets).differenceBy(localAssets, 'uuid').value()
 	if (needRemovedInCloud.length > 0) {
 		synced += await removeAssetsInCloud(needRemovedInCloud)
 	}
+	// add data to cloud if not in cloud
+	const needSyncedAssetsToCloud = _(localAssets).differenceBy(cloudAssets, 'uuid').value()
+	if (needSyncedAssetsToCloud.length > 0 || changedDataInLocal.length > 0) {
+		// write data to cloud
+		synced += await writeAssetsToCloud(publicKey, _([...needSyncedAssetsToCloud, ...changedDataInLocal])
+			.uniqBy(a => getModelKey(a))
+			.value()
+		)
+	}
 
-	await updateLastSyncTime(d, publicKey)
+	await markAsSynced(d, publicKey)
 	return synced
 }
 
-async function writeAssetsToCloud(publicKey: string, assets: AssetModel[]): Promise<number> {
+async function writeAssetsToCloud(publicKey: string, assets: ExportAssetModel[]): Promise<number> {
 	const gas = _(assets).groupBy('uuid').value()
 	const p = await getPolybaseDB()
 	const res = await bluebird.map(Object.keys(gas), async (uuid) => {
@@ -298,11 +335,9 @@ async function writeAssetsToCloud(publicKey: string, assets: AssetModel[]): Prom
 	return _(res).sum()
 }
 
-async function removeAssetsInCloud(assets: AssetModel[]): Promise<number> {
+async function removeAssetsInCloud(assets: ExportAssetModel[]): Promise<number> {
 	const p = await getPolybaseDB()
 	const res = await bluebird.map(_(assets).map('uuid').uniq().value(), async (uid: string) => {
-		console.log('removeAssetsInCloud', uid);
-		
 		const records = await p.collection<CloudAssetModel>(RECORD_COLLECTION_NAME).where("uuid", "==", uid).get()
 		if (records.data.length === 0) {
 			return 0
@@ -317,12 +352,27 @@ async function removeAssetsInCloud(assets: AssetModel[]): Promise<number> {
 }
 
 // return updated how many records
-async function writeAssetsToDB(d: Database, assets: AssetModel[]): Promise<number> {
-	const res = await saveModelsToDatabase(ASSETS_TABLE_NAME, _.map(assets, (obj) => _.omit(obj, "id")))
+async function writeAssetsToDB(d: Database, assets: ExportAssetModel[]): Promise<number> {
+	const res = await saveModelsToDatabase(ASSETS_TABLE_NAME, _(assets).map(a => _(a).omit("id").omit("costPrice").value()).value())
+	const f = _(assets).find(a => a.costPrice !== undefined)
+	if (!f) {
+		// not asset_price need to be saved
+		return res.length
+	}
+	const priceMOdels = _(assets).filter(a => a.costPrice !== undefined).map(a => ({
+		uuid: a.uuid,
+		assetID: a.id,
+		symbol: a.symbol,
+		price: a.costPrice,
+		assetCreatedAt: a.createdAt,
+		updatedAt: new Date().toISOString(),
+	} as AssetPriceModel)).value()
+
+	await saveModelsToDatabase(ASSETS_PRICE_TABLE_NAME, priceMOdels)
 	return res.length
 }
 
-async function updateLastSyncTime(d: Database, publicKey: string) {
+async function markAsSynced(d: Database, publicKey: string) {
 	await d.execute(`INSERT INTO ${CLOUD_SYNC_TABLE_NAME} (publicKey, updatedAt) VALUES (?, ?) ON CONFLICT(publicKey) DO UPDATE SET updatedAt = ?`, [publicKey, new Date().toISOString(), new Date().toISOString()])
 }
 
diff --git a/src/middlelayers/data.ts b/src/middlelayers/data.ts
index fdebe5f..bf27082 100644
--- a/src/middlelayers/data.ts
+++ b/src/middlelayers/data.ts
@@ -12,8 +12,8 @@ import { ASSETS_PRICE_TABLE_NAME, ASSETS_TABLE_NAME, queryAllAssetPrices, queryH
 import _ from 'lodash'
 import { save, open } from "@tauri-apps/api/dialog"
 import { writeTextFile, readTextFile } from "@tauri-apps/api/fs"
-import { AssetModel, AssetPriceModel, HistoricalData } from './types'
-import { getDatabase, saveModelsToDatabase } from './database'
+import { AssetPriceModel, ExportAssetModel, HistoricalData } from './types'
+import { saveModelsToDatabase } from './database'
 import { exportConfigurationString, importRawConfiguration } from './configuration'
 
 type ExportData = {
@@ -159,7 +159,7 @@ export async function importHistoricalData(): Promise<boolean> {
 }
 
 // import historicalData from file
-async function saveHistoricalDataAssets(assets: (AssetModel & { costPrice?: number })[]) {
+async function saveHistoricalDataAssets(assets: ExportAssetModel[]) {
 	const requiredKeys = ["uuid", "createdAt", "symbol", "amount", "value", "price"]
 	_(assets).forEach((asset) => {
 		_(requiredKeys).forEach(k => {
@@ -173,10 +173,12 @@ async function saveHistoricalDataAssets(assets: (AssetModel & { costPrice?: numb
 
 	// import asset prices
 	const importedAssets = _(await queryHistoricalData(-1, false)).map(d => d.assets).flatten().value()
+	const importAssetsMap = _(importedAssets).mapKeys(a => `${a.uuid}/${a.symbol}/${a.wallet}`).value()
+
 	const assetPriceModels = _(assets).filter(a => a.costPrice !== undefined).map(a => {
-		console.log(a);
-		
-		const f = _(importedAssets).find(ia => ia.uuid === a.uuid && ia.symbol === a.symbol && ia.wallet === a.wallet)
+		const key = `${a.uuid}/${a.symbol}/${a.wallet}`
+
+		const f = importAssetsMap[key]
 		if (!f) {
 			return
 		}
@@ -185,7 +187,8 @@ async function saveHistoricalDataAssets(assets: (AssetModel & { costPrice?: numb
 			assetID: f.id,
 			symbol: a.symbol,
 			price: a.costPrice,
-			createdAt: a.createdAt
+			assetCreatedAt: a.createdAt,
+			updatedAt: new Date().toISOString(),
 		} as AssetPriceModel
 	}).compact().value()
 
diff --git a/src/middlelayers/database.ts b/src/middlelayers/database.ts
index c16729a..4256af6 100644
--- a/src/middlelayers/database.ts
+++ b/src/middlelayers/database.ts
@@ -2,8 +2,8 @@ import _ from "lodash"
 import Database from "tauri-plugin-sql-api"
 import { v4 as uuidv4 } from 'uuid'
 import { CoinModel } from './datafetch/types'
-import { AssetPriceModel, AssetModel, WalletCoinUSD } from './types'
-import { ASSETS_PRICE_TABLE_NAME, ASSETS_TABLE_NAME } from './charts'
+import { AssetModel, WalletCoinUSD } from './types'
+import { ASSETS_TABLE_NAME } from './charts'
 import md5 from 'md5'
 
 export const databaseName = "track3.db"
diff --git a/src/middlelayers/types.d.ts b/src/middlelayers/types.d.ts
index a6fc036..092740d 100644
--- a/src/middlelayers/types.d.ts
+++ b/src/middlelayers/types.d.ts
@@ -10,6 +10,9 @@ export type AssetModel = {
 	wallet?: string
 }
 
+// type when exporting assets to json or cloud database
+export type ExportAssetModel = AssetModel & { costPrice?: number }
+
 // asset_prices table
 // to record the cost price or sell price of each coins, can be updated by users
 export type AssetPriceModel = {
@@ -23,7 +26,8 @@ export type AssetPriceModel = {
 	price: number
 
 	// createdAt in assets_v2 table
-	createdAt: string
+	assetCreatedAt: string
+	updatedAt: string
 }
 
 export type CloudAssetModel = {
@@ -33,7 +37,7 @@ export type CloudAssetModel = {
 
 	uuid: string
 
-	// json stringify from AssetModel[]
+	// json stringify from ExportAssetModel[]
 	records: string
 
 	createdAt: number
@@ -169,7 +173,7 @@ export type HistoricalData = {
 	id: string
 	createdAt: string
 	// costPrice only exists when exporting historical data
-	assets: (AssetModel & { costPrice?: number })[]
+	assets: ExportAssetModel[]
 
 	total: number
 }