diff --git a/Gameton-06/Assets/Gameton/Scripts/Character/CollisionDetector .cs b/Gameton-06/Assets/Gameton/Scripts/Character/CollisionDetector .cs
index 390128cf..8b7ca376 100644
--- a/Gameton-06/Assets/Gameton/Scripts/Character/CollisionDetector .cs	
+++ b/Gameton-06/Assets/Gameton/Scripts/Character/CollisionDetector .cs	
@@ -8,10 +8,15 @@ namespace TON
     {
         private Collider2D col; // 자식 오브젝트의 Collider
 
+        private DamageCalculator damageCalculator = new DamageCalculator();
+        private PlayerData playerData;
+
         private void Awake()
         {
             col = GetComponent<Collider2D>();
             col.enabled = false; // 초기에는 감지 비활성화
+
+            playerData = PlayerDataManager.Singleton.player;
         }
 
         private void OnTriggerEnter2D(Collider2D collision)
@@ -20,6 +25,13 @@ namespace TON
 
             if (collision.CompareTag("Monster")) // 적과 충돌 시 제거
             {
+                // 기본 데미지 계산
+                // float damage = damageCalculator.CalculateBaseDamage(playerData.attackPower, playerData.equipmentAttack, playerData.defensivePower);
+                float damage = damageCalculator.CalculateBaseDamage(playerData.attackPower, 10, playerData.defensivePower);
+
+                // 치명타 적용 (캐릭터는 적용)
+                damage = damageCalculator.ApplyCriticalDamage(damage, true);
+
                 collision.GetComponent<IDamage>().ApplyDamage(10f);
             }
         }
diff --git a/Gameton-06/Assets/Gameton/Scripts/Common/DamageCalculator.cs b/Gameton-06/Assets/Gameton/Scripts/Common/DamageCalculator.cs
new file mode 100644
index 00000000..7381cb0d
--- /dev/null
+++ b/Gameton-06/Assets/Gameton/Scripts/Common/DamageCalculator.cs
@@ -0,0 +1,46 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace TON
+{
+    public class DamageCalculator : MonoBehaviour
+    {
+        public float criticalChance = 0.3f;  // 캐릭터 치명타 확률 (30%)
+        public float criticalMultiplier = 1.5f;  // 치명타 배율 (1.5배)
+
+        /// <summary>
+        /// 일반 공격 데미지 계산
+        /// </summary>
+        public float CalculateBaseDamage(float baseAttack, float equipmentAttack, float defenseValue)
+        {
+            // 1. 총 공격력 계산
+            float totalAttackPower = baseAttack + equipmentAttack;
+
+            // 2. 데미지 변수 (0.9 ~ 1.1 랜덤 값)
+            float damageMultiplier = Random.Range(0.9f, 1.1f);
+
+            // 3. 방어력 계산 (1 - 방어력 값)
+            float defenseEffect = 1 - defenseValue;
+
+            // 4. 기본 데미지 계산
+            float baseDamage = (totalAttackPower * damageMultiplier) * defenseEffect;
+
+            return Mathf.Round(baseDamage); // 소수점 제거 (선택 사항)
+        }
+
+        /// <summary>
+        /// 치명타 적용 (치명타 확률이 0보다 클 경우에만 적용)
+        /// </summary>
+        public float ApplyCriticalDamage(float damage, bool canCritical)
+        {
+            if (canCritical && Random.value < criticalChance) // Random.value는 0.0 ~ 1.0 사이의 랜덤 값
+            {
+                damage *= criticalMultiplier;
+                Debug.Log("💥 치명타 발생! 💥");
+            }
+
+            return Mathf.Round(damage); // 소수점 제거
+        }
+    }
+}
diff --git a/Gameton-06/Assets/Gameton/Scripts/Common/DamageCalculator.cs.meta b/Gameton-06/Assets/Gameton/Scripts/Common/DamageCalculator.cs.meta
new file mode 100644
index 00000000..190d7f6d
--- /dev/null
+++ b/Gameton-06/Assets/Gameton/Scripts/Common/DamageCalculator.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 600b739ee220368499772ed0a8756028
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: