diff --git a/src/main/java/com/DecodEat/domain/products/controller/ProductController.java b/src/main/java/com/DecodEat/domain/products/controller/ProductController.java
index b9129a6..a3d7469 100644
--- a/src/main/java/com/DecodEat/domain/products/controller/ProductController.java
+++ b/src/main/java/com/DecodEat/domain/products/controller/ProductController.java
@@ -7,6 +7,7 @@
 import com.DecodEat.domain.users.entity.User;
 import com.DecodEat.global.apiPayload.ApiResponse;
 import com.DecodEat.global.common.annotation.CurrentUser;
+import com.DecodEat.global.common.annotation.OptionalUser;
 import com.DecodEat.global.dto.PageResponseDto;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -34,8 +35,9 @@ public class ProductController {
             summary = "제품 조회",
             description = "단일 제품 상세 정보 조회")
     @GetMapping("/{id}")
-    public ApiResponse<ProductDetailDto> getProduct(@PathVariable Long id) {
-        return ApiResponse.onSuccess(productService.getDetail(id));
+    public ApiResponse<ProductDetailDto> getProduct(@PathVariable Long id,
+                                                    @OptionalUser User user) {
+        return ApiResponse.onSuccess(productService.getDetail(id,user));
     }
 
     @Operation(
diff --git a/src/main/java/com/DecodEat/domain/products/service/ProductService.java b/src/main/java/com/DecodEat/domain/products/service/ProductService.java
index 248e5ed..53dfadf 100644
--- a/src/main/java/com/DecodEat/domain/products/service/ProductService.java
+++ b/src/main/java/com/DecodEat/domain/products/service/ProductService.java
@@ -18,7 +18,9 @@
 import com.DecodEat.domain.products.repository.ProductRepository;
 import com.DecodEat.domain.products.repository.RawMaterialRepository;
 import com.DecodEat.domain.products.repository.ProductSpecification;
+import com.DecodEat.domain.users.entity.Behavior;
 import com.DecodEat.domain.users.entity.User;
+import com.DecodEat.domain.users.service.UserBehaviorService;
 import com.DecodEat.global.aws.s3.AmazonS3Manager;
 import com.DecodEat.global.dto.PageResponseDto;
 import com.DecodEat.global.exception.GeneralException;
@@ -52,13 +54,17 @@ public class ProductService {
     private final ProductRawMaterialRepository productRawMaterialRepository;
     private final AmazonS3Manager amazonS3Manager;
     private final PythonAnalysisClient pythonAnalysisClient;
+    private final UserBehaviorService userBehaviorService;
 
 
     private static final int PAGE_SIZE = 12;
 
-    public ProductDetailDto getDetail(Long id) {
+    public ProductDetailDto getDetail(Long id, User user) {
         Product product = productRepository.findById(id).orElseThrow(() -> new GeneralException(PRODUCT_NOT_EXISTED));
 
+        if(user != null)
+            userBehaviorService.saveUserBehavior(user,product, Behavior.VIEW);
+
         List<ProductInfoImage> images = productImageRepository.findByProduct(product);
         List<String> imageUrls = images.stream().map(ProductInfoImage::getImageUrl).toList();
 
@@ -106,6 +112,8 @@ public ProductRegisterResponseDto addProduct(User user, ProductRegisterRequestDt
         // 파이썬 서버에 비동기로 분석 요청
         requestAnalysisAsync(savedProduct.getProductId(), productInfoImageUrls);
 
+        userBehaviorService.saveUserBehavior(user,savedProduct,Behavior.REGISTER); // todo: 만약에 분석 실패?
+
         return ProductConverter.toProductRegisterDto(savedProduct, productInfoImageUrls);
     }
 
@@ -117,6 +125,7 @@ public ProductResponseDTO.ProductListResultDTO getProducts(Long cursorId) {
         return ProductConverter.toProductListResultDTO(slice);
     }
 
+    // todo: 검색은 상품 엔티티와 1:1 매핑 불가능 -> userbehavior 어떻게?
     public List<ProductSearchResponseDto.SearchResultPrevDto> searchProducts(String productName) {
 
         Specification<Product> spec = Specification.where(ProductSpecification.isCompleted());
diff --git a/src/main/java/com/DecodEat/domain/users/entity/Behavior.java b/src/main/java/com/DecodEat/domain/users/entity/Behavior.java
new file mode 100644
index 0000000..e7ee615
--- /dev/null
+++ b/src/main/java/com/DecodEat/domain/users/entity/Behavior.java
@@ -0,0 +1,5 @@
+package com.DecodEat.domain.users.entity;
+
+public enum Behavior {
+    VIEW,LIKE,REGISTER,SEARCH
+}
diff --git a/src/main/java/com/DecodEat/domain/users/entity/UserBehavior.java b/src/main/java/com/DecodEat/domain/users/entity/UserBehavior.java
new file mode 100644
index 0000000..14e36c5
--- /dev/null
+++ b/src/main/java/com/DecodEat/domain/users/entity/UserBehavior.java
@@ -0,0 +1,32 @@
+package com.DecodEat.domain.users.entity;
+
+import com.DecodEat.domain.products.entity.Product;
+import com.DecodEat.global.common.BaseEntity;
+import jakarta.persistence.*;
+import lombok.*;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Table
+@Builder
+@AllArgsConstructor
+public class UserBehavior extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id", nullable = false)
+    private User user;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "product_id", nullable = false)
+    private Product product;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "behavior", nullable = false)
+    private Behavior behavior;
+
+}
\ No newline at end of file
diff --git a/src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java b/src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java
new file mode 100644
index 0000000..8de1d52
--- /dev/null
+++ b/src/main/java/com/DecodEat/domain/users/repository/UserBehaviorRepository.java
@@ -0,0 +1,7 @@
+package com.DecodEat.domain.users.repository;
+
+import com.DecodEat.domain.users.entity.UserBehavior;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface UserBehaviorRepository extends JpaRepository<UserBehavior, Long> {
+}
diff --git a/src/main/java/com/DecodEat/domain/users/service/UserBehaviorService.java b/src/main/java/com/DecodEat/domain/users/service/UserBehaviorService.java
new file mode 100644
index 0000000..1ccd996
--- /dev/null
+++ b/src/main/java/com/DecodEat/domain/users/service/UserBehaviorService.java
@@ -0,0 +1,25 @@
+package com.DecodEat.domain.users.service;
+
+import com.DecodEat.domain.products.entity.Product;
+import com.DecodEat.domain.users.entity.Behavior;
+import com.DecodEat.domain.users.entity.User;
+import com.DecodEat.domain.users.entity.UserBehavior;
+import com.DecodEat.domain.users.repository.UserBehaviorRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+public class UserBehaviorService {
+    private final UserBehaviorRepository userBehaviorRepository;
+    @Transactional
+    public void saveUserBehavior(User user, Product product, Behavior behavior) {
+        UserBehavior userBehavior = UserBehavior.builder()
+                .user(user)
+                .product(product)
+                .behavior(behavior)
+                .build();
+        userBehaviorRepository.save(userBehavior);
+    }
+}
diff --git a/src/main/java/com/DecodEat/global/config/CurrentUserArgumentResolver.java b/src/main/java/com/DecodEat/global/common/annotation/CurrentUserArgumentResolver.java
similarity index 94%
rename from src/main/java/com/DecodEat/global/config/CurrentUserArgumentResolver.java
rename to src/main/java/com/DecodEat/global/common/annotation/CurrentUserArgumentResolver.java
index b0f1ff7..e53eb6d 100644
--- a/src/main/java/com/DecodEat/global/config/CurrentUserArgumentResolver.java
+++ b/src/main/java/com/DecodEat/global/common/annotation/CurrentUserArgumentResolver.java
@@ -1,8 +1,7 @@
-package com.DecodEat.global.config;
+package com.DecodEat.global.common.annotation;
 
 import com.DecodEat.domain.users.service.UserService;
 import com.DecodEat.global.apiPayload.code.status.ErrorStatus;
-import com.DecodEat.global.common.annotation.CurrentUser;
 import com.DecodEat.global.exception.GeneralException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.core.MethodParameter;
diff --git a/src/main/java/com/DecodEat/global/common/annotation/OptionalUser.java b/src/main/java/com/DecodEat/global/common/annotation/OptionalUser.java
new file mode 100644
index 0000000..d98c6a2
--- /dev/null
+++ b/src/main/java/com/DecodEat/global/common/annotation/OptionalUser.java
@@ -0,0 +1,14 @@
+package com.DecodEat.global.common.annotation;
+
+import io.swagger.v3.oas.annotations.Parameter;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.PARAMETER)
+@Retention(RetentionPolicy.RUNTIME)
+@Parameter(hidden = true)
+public @interface OptionalUser {
+}
\ No newline at end of file
diff --git a/src/main/java/com/DecodEat/global/common/annotation/OptionalUserArgumentResolver.java b/src/main/java/com/DecodEat/global/common/annotation/OptionalUserArgumentResolver.java
new file mode 100644
index 0000000..bed3b8b
--- /dev/null
+++ b/src/main/java/com/DecodEat/global/common/annotation/OptionalUserArgumentResolver.java
@@ -0,0 +1,39 @@
+package com.DecodEat.global.common.annotation;
+
+import com.DecodEat.domain.users.entity.User;
+import com.DecodEat.domain.users.service.UserService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.core.MethodParameter;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.stereotype.Component;
+import org.springframework.web.bind.support.WebDataBinderFactory;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.method.support.HandlerMethodArgumentResolver;
+import org.springframework.web.method.support.ModelAndViewContainer;
+
+@Component
+@RequiredArgsConstructor
+public class OptionalUserArgumentResolver implements HandlerMethodArgumentResolver {
+    private final UserService userService;
+
+    @Override
+    public boolean supportsParameter(MethodParameter parameter) {
+        return parameter.getParameterAnnotation(OptionalUser.class) != null
+                && parameter.getParameterType().equals(User.class);
+    }
+
+    @Override
+    public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
+        Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
+
+        if (principal instanceof org.springframework.security.core.userdetails.User springUser) {
+            Long userId = Long.valueOf(springUser.getUsername());
+            return userService.findById(userId);
+        }
+
+        // 예외를 던지는 대신 null을 반환!
+        return null;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/DecodEat/global/config/WebConfig.java b/src/main/java/com/DecodEat/global/config/WebConfig.java
index 24be7e0..9ce29c5 100644
--- a/src/main/java/com/DecodEat/global/config/WebConfig.java
+++ b/src/main/java/com/DecodEat/global/config/WebConfig.java
@@ -1,5 +1,6 @@
 package com.DecodEat.global.config;
 
+import com.DecodEat.global.common.annotation.CurrentUserArgumentResolver;
 import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.method.support.HandlerMethodArgumentResolver;