diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100Entity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100Entity.java
index 58e68ad19..76231a033 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100Entity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100Entity.java
@@ -126,7 +126,8 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
                                 .fireTime(0)
                                 .durability(60)
                                 .velocity(40)
-                                .sound(ModSounds.INTO_MISSILE.get()),
+                                .sound(ModSounds.INTO_MISSILE.get())
+                                .ammo(ModItems.AP_5_INCHES.get()),
                         // HE
                         new CannonShellWeapon()
                                 .hitDamage(100)
@@ -136,7 +137,8 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
                                 .fireTime(2)
                                 .durability(1)
                                 .velocity(25)
-                                .sound(ModSounds.INTO_CANNON.get()),
+                                .sound(ModSounds.INTO_CANNON.get())
+                                .ammo(ModItems.HE_5_INCHES.get()),
                 },
                 new VehicleWeapon[]{
                         // 机枪
@@ -144,7 +146,8 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
                                 .damage(VehicleConfig.SPEEDBOAT_GUN_DAMAGE.get())
                                 .headShot(2)
                                 .zoom(false)
-                                .bypassArmorRate(0.4f),
+                                .bypassArmorRate(0.4f)
+                                .ammo(ModItems.HEAVY_AMMO.get()),
                 }
         };
     }
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/weapon/VehicleWeapon.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/weapon/VehicleWeapon.java
index 9ba4cdb3a..4d3612bab 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/weapon/VehicleWeapon.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/weapon/VehicleWeapon.java
@@ -3,7 +3,7 @@ package com.atsuishio.superbwarfare.entity.vehicle.weapon;
 import net.minecraft.network.chat.Component;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.sounds.SoundEvent;
-import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.Item;
 
 public abstract class VehicleWeapon {
 
@@ -12,7 +12,7 @@ public abstract class VehicleWeapon {
     // 武器的名称
     public Component name;
     // 武器使用的弹药类型
-    public ItemStack ammo;
+    public Item ammo;
     // 装弹类型
     public AmmoType ammoType = AmmoType.INDIRECT;
     // 最大装弹量（对直接读取备弹的武器无效）
@@ -39,7 +39,7 @@ public abstract class VehicleWeapon {
         return this;
     }
 
-    public VehicleWeapon ammo(ItemStack ammo) {
+    public VehicleWeapon ammo(Item ammo) {
         this.ammo = ammo;
         return this;
     }