diff --git a/src/main/java/dev/dubhe/anvilcraft/mixin/EndPortalBlockMixin.java b/src/main/java/dev/dubhe/anvilcraft/mixin/EndPortalBlockMixin.java
index 871f62f66..52a6f3190 100644
--- a/src/main/java/dev/dubhe/anvilcraft/mixin/EndPortalBlockMixin.java
+++ b/src/main/java/dev/dubhe/anvilcraft/mixin/EndPortalBlockMixin.java
@@ -3,12 +3,12 @@
 import dev.dubhe.anvilcraft.init.ModBlockTags;
 import dev.dubhe.anvilcraft.init.ModBlocks;
 
+import dev.dubhe.anvilcraft.util.SpectralAnvilConversionUtil;
 import net.minecraft.core.BlockPos;
 import net.minecraft.tags.BlockTags;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.item.FallingBlockEntity;
 import net.minecraft.world.level.Level;
-import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.EndPortalBlock;
 import net.minecraft.world.level.block.Portal;
 import net.minecraft.world.level.block.state.BlockState;
@@ -18,6 +18,7 @@
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
+
 @Mixin(EndPortalBlock.class)
 abstract class EndPortalBlockMixin {
     @Inject(
@@ -36,24 +37,11 @@ private void fallBlockEntityInside(
                 && !fallingBlockEntity.blockState.is(ModBlockTags.END_PORTAL_UNABLE_CHANGE)
         ) {
             BlockState newState = ModBlocks.END_DUST.getDefaultState();
-            anvil:
             if (fallingBlockEntity.blockState.is(BlockTags.ANVIL)) {
                 double rand = pLevel.random.nextDouble();
-                if (fallingBlockEntity.blockState.is(Blocks.DAMAGED_ANVIL) && rand >= 0.01) {
-                    break anvil;
-                } else if (fallingBlockEntity.blockState.is(Blocks.CHIPPED_ANVIL) && rand >= 0.02) {
-                    break anvil;
-                } else if (fallingBlockEntity.blockState.is(Blocks.ANVIL) && rand >= 0.03) {
-                    break anvil;
-                } else if (fallingBlockEntity.blockState.is(ModBlocks.ROYAL_ANVIL) && rand >= 0.5) {
-                    break anvil;
-                } else if (fallingBlockEntity.blockState.is(ModBlocks.EMBER_ANVIL)) {
+                if (rand < SpectralAnvilConversionUtil.chance(fallingBlockEntity.blockState.getBlock())) {
                     newState = ModBlocks.SPECTRAL_ANVIL.getDefaultState();
-                    break anvil;
-                } else if (rand >= 0.03) {
-                    break anvil;
                 }
-                newState = ModBlocks.SPECTRAL_ANVIL.getDefaultState();
             }
             fallingBlockEntity.blockState = newState;
             fallingBlockEntity.setAsInsidePortal((Portal) this, pPos);
diff --git a/src/main/java/dev/dubhe/anvilcraft/util/SpectralAnvilConversionUtil.java b/src/main/java/dev/dubhe/anvilcraft/util/SpectralAnvilConversionUtil.java
new file mode 100644
index 000000000..4e2c126a3
--- /dev/null
+++ b/src/main/java/dev/dubhe/anvilcraft/util/SpectralAnvilConversionUtil.java
@@ -0,0 +1,23 @@
+package dev.dubhe.anvilcraft.util;
+
+import dev.dubhe.anvilcraft.init.ModBlocks;
+import it.unimi.dsi.fastutil.objects.Object2DoubleMap;
+import it.unimi.dsi.fastutil.objects.Object2DoubleOpenHashMap;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
+
+public class SpectralAnvilConversionUtil {
+    private static final Object2DoubleMap<Block> SPECTRAL_ANVIL_CONVERSION_CHANCE = new Object2DoubleOpenHashMap<>();
+
+    static {
+        SPECTRAL_ANVIL_CONVERSION_CHANCE.put(Blocks.DAMAGED_ANVIL, 0.01);
+        SPECTRAL_ANVIL_CONVERSION_CHANCE.put(Blocks.CHIPPED_ANVIL, 0.02);
+        SPECTRAL_ANVIL_CONVERSION_CHANCE.put(Blocks.ANVIL, 0.03);
+        SPECTRAL_ANVIL_CONVERSION_CHANCE.put(ModBlocks.ROYAL_ANVIL.get(), 0.5);
+        SPECTRAL_ANVIL_CONVERSION_CHANCE.put(ModBlocks.EMBER_ANVIL.get(), 1.0);
+    }
+
+    public static double chance(Block block) {
+        return SPECTRAL_ANVIL_CONVERSION_CHANCE.getOrDefault(block, 0.03);
+    }
+}