diff --git a/src/main/java/com/atsuishio/superbwarfare/data/gun/GunData.java b/src/main/java/com/atsuishio/superbwarfare/data/gun/GunData.java
index 01e9ae250..48804deba 100644
--- a/src/main/java/com/atsuishio/superbwarfare/data/gun/GunData.java
+++ b/src/main/java/com/atsuishio/superbwarfare/data/gun/GunData.java
@@ -71,7 +71,13 @@ public class GunData {
         perk = new Perks(this);
 
         ammo = new IntValue(data, "Ammo");
-        fireMode = new StringEnumValue<>(data, "FireMode", defaultGunData().defaultFireMode, FireMode::fromValue);
+
+        var defaultFireMode = defaultGunData().defaultFireMode;
+        if (defaultFireMode == null) {
+            defaultFireMode = FireMode.SEMI;
+        }
+
+        fireMode = new StringEnumValue<>(data, "FireMode", defaultFireMode, FireMode::fromValue);
         level = new IntValue(data, "Level");
         exp = new DoubleValue(data, "Exp");
         upgradePoint = new DoubleValue(data, "UpgradePoint");
@@ -203,7 +209,10 @@ public class GunData {
     }
 
     public ProjectileInfo projectileInfo() {
-        return defaultGunData().projectile;
+        var info = defaultGunData().projectile;
+        if (info == null) return new ProjectileInfo();
+
+        return info;
     }
 
     public String projectileType() {
@@ -227,6 +236,8 @@ public class GunData {
     }
 
     public Set<ReloadType> reloadTypes() {
+        if (defaultGunData().reloadTypes == null) return Set.of();
+
         return defaultGunData().reloadTypes;
     }
 
@@ -356,7 +367,7 @@ public class GunData {
 
     public AmmoTypeInfo ammoTypeInfo() {
         var ammoType = defaultGunData().ammoType;
-        if (ammoType.isEmpty()) {
+        if (ammoType == null || ammoType.isEmpty()) {
             return new AmmoTypeInfo(AmmoConsumeType.INVALID, "");
         }
 
@@ -542,6 +553,8 @@ public class GunData {
     }
 
     public Set<FireMode> getAvailableFireModes() {
+        if (defaultGunData().availableFireModes == null) return Set.of();
+
         return defaultGunData().availableFireModes;
     }
 
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/damage/DamageModify.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/damage/DamageModify.java
index 7ef3fbb98..c605f3cf9 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/damage/DamageModify.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/damage/DamageModify.java
@@ -142,6 +142,9 @@ public class DamageModify {
      * @return 计算后的伤害值
      */
     public float compute(float damage) {
+        // 类型出错默认视为免疫
+        if (type == null) return 0;
+
         return switch (type) {
             case IMMUNITY -> 0;
             case REDUCE -> Math.max(damage - value, 0);