diff --git a/src/main/java/dev/dubhe/anvilcraft/inventory/EmberAnvilMenu.java b/src/main/java/dev/dubhe/anvilcraft/inventory/EmberAnvilMenu.java
index d90f7ea79e..454a694991 100644
--- a/src/main/java/dev/dubhe/anvilcraft/inventory/EmberAnvilMenu.java
+++ b/src/main/java/dev/dubhe/anvilcraft/inventory/EmberAnvilMenu.java
@@ -60,6 +60,10 @@ protected boolean mayPickup(Player player, boolean hasStack) {
     public void createResult() {
         ItemStack inputLeft = this.getSlot(0).getItem();
         ItemStack inputRight = this.getSlot(1).getItem();
+        if (inputLeft.isEmpty()) {
+            super.createResult();
+            return;
+        }
         this.result.createResult(
             this.player,
             inputLeft,
diff --git a/src/main/java/dev/dubhe/anvilcraft/inventory/FrostAnvilMenu.java b/src/main/java/dev/dubhe/anvilcraft/inventory/FrostAnvilMenu.java
index 6ea65bc04a..98867937ed 100644
--- a/src/main/java/dev/dubhe/anvilcraft/inventory/FrostAnvilMenu.java
+++ b/src/main/java/dev/dubhe/anvilcraft/inventory/FrostAnvilMenu.java
@@ -67,6 +67,10 @@ protected boolean mayPickup(Player player, boolean hasStack) {
     public void createResult() {
         ItemStack inputLeft = this.getSlot(0).getItem();
         ItemStack inputRight = this.getSlot(1).getItem();
+        if (inputLeft.isEmpty()) {
+            super.createResult();
+            return;
+        }
         this.result.createResult(
             this.player,
             inputLeft,
diff --git a/src/main/java/dev/dubhe/anvilcraft/inventory/RoyalAnvilMenu.java b/src/main/java/dev/dubhe/anvilcraft/inventory/RoyalAnvilMenu.java
index bb3e8aee0b..2f242b0bfb 100644
--- a/src/main/java/dev/dubhe/anvilcraft/inventory/RoyalAnvilMenu.java
+++ b/src/main/java/dev/dubhe/anvilcraft/inventory/RoyalAnvilMenu.java
@@ -64,6 +64,10 @@ protected boolean mayPickup(Player player, boolean hasStack) {
     public void createResult() {
         ItemStack inputLeft = this.getSlot(0).getItem();
         ItemStack inputRight = this.getSlot(1).getItem();
+        if (inputLeft.isEmpty()) {
+            super.createResult();
+            return;
+        }
         this.result.createResult(
             this.player,
             inputLeft,
diff --git a/src/main/java/dev/dubhe/anvilcraft/inventory/TranscendenceAnvilMenu.java b/src/main/java/dev/dubhe/anvilcraft/inventory/TranscendenceAnvilMenu.java
index 04ca88df61..d8ac1de0bc 100644
--- a/src/main/java/dev/dubhe/anvilcraft/inventory/TranscendenceAnvilMenu.java
+++ b/src/main/java/dev/dubhe/anvilcraft/inventory/TranscendenceAnvilMenu.java
@@ -71,6 +71,10 @@ protected boolean mayPickup(Player player, boolean hasStack) {
     public void createResult() {
         ItemStack inputLeft = this.getSlot(0).getItem();
         ItemStack inputRight = this.getSlot(1).getItem();
+        if (inputLeft.isEmpty()) {
+            super.createResult();
+            return;
+        }
         this.result.createResult(
             this.player,
             inputLeft,