diff --git a/src/pages/portfolio/[id].jsx b/src/pages/portfolio/[id].jsx
new file mode 100644
index 0000000..027d8c9
--- /dev/null
+++ b/src/pages/portfolio/[id].jsx
@@ -0,0 +1,56 @@
+import { Footer } from "../../components/Footer/Footer";
+import { Header } from "../../components/Header/Header";
+import styles from "./portfolio.module.scss";
+
+// pages/blog/[id].js
+export default function BlogId({ blog }) {
+	return (
+		<div className="body">
+			<Header title={blog.title} />
+			<main className={styles.main}>
+				<h1 className={styles.title}>{blog.title}</h1>
+				<div
+					dangerouslySetInnerHTML={{
+						__html: `${blog.body}`,
+					}}
+					className={styles.post}
+				/>
+			</main>
+			<Footer />
+		</div>
+	);
+}
+
+// 静的生成のためのパスを指定します
+export const getStaticPaths = async () => {
+	const key = {
+		headers: { "X-API-KEY": process.env.API_KEY },
+	};
+	const data = await fetch(
+		"https://ratio-observatory.microcms.io/api/v1/contents",
+		key
+	)
+		.then((res) => res.json())
+		.catch(() => null);
+	const paths = data.contents.map((content) => `/portfolio/${content.id}`);
+	return { paths, fallback: false };
+};
+
+// データをテンプレートに受け渡す部分の処理を記述します
+export const getStaticProps = async (context) => {
+	const id = context.params.id;
+	const key = {
+		headers: { "X-API-KEY": process.env.API_KEY },
+	};
+	const data = await fetch(
+		"https://ratio-observatory.microcms.io/api/v1/contents/" + id,
+		key
+	)
+		.then((res) => res.json())
+		.catch(() => null);
+	return {
+		props: {
+			blog: data,
+		},
+	};
+};