diff --git a/README.md b/README.md
index a4f7992..fa87a4e 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,23 @@
-# spring-shopping-precourse
\ No newline at end of file
+# spring-shopping-precourse
+
+## 기능사항
+
+
+### 상품
+- [x] 상품이름은 공백 포함 최대 15자이다.
+- [x] 특수문자 (),[],+,-,&,/,_만 가능하다.
+- [x] 상품을 조회할 수 있다.
+- [x] 상품을 추가할 수 있다.
+- [ ] 상품을 수정할 수 있다.
+- [ ] 상품을 삭제할 수 있다.
+- [ ] 비속어를 포함할 수 없다.
+
+
+### 개발 진행
+1. TDD 형태로 개발할 것
+2. 작은 단계부터 큰 단계로 진행
+- [x] 모델 
+- [ ] 서비스
+- [ ] 컨트롤러
+- [ ] 레포지토리
+- [ ] DB 연결
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index 3f75395..98bb6f3 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -33,6 +33,8 @@ dependencies {
     testImplementation("org.springframework.boot:spring-boot-starter-test")
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit5")
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+
+    testImplementation ("org.assertj:assertj-core:3.11.1")
 }
 
 kotlin {
diff --git a/src/main/java/shopping/api/entity/CreateProductRequest.java b/src/main/java/shopping/api/entity/CreateProductRequest.java
new file mode 100644
index 0000000..abb860f
--- /dev/null
+++ b/src/main/java/shopping/api/entity/CreateProductRequest.java
@@ -0,0 +1,30 @@
+package shopping.api.entity;
+
+import shopping.domain.entity.ImageUrl;
+import shopping.domain.entity.Name;
+import shopping.domain.entity.Price;
+
+public class CreateProductRequest {
+
+    private Name name;
+    private Price price;
+    private ImageUrl imageUrl;
+
+    public CreateProductRequest(Name name, Price price, ImageUrl imageUrl) {
+        this.name = name;
+        this.price = price;
+        this.imageUrl = imageUrl;
+    }
+
+    public Name getName() {
+        return name;
+    }
+
+    public Price getPrice() {
+        return price;
+    }
+
+    public ImageUrl getImageUrl() {
+        return imageUrl;
+    }
+}
diff --git a/src/main/java/shopping/api/service/ProductService.java b/src/main/java/shopping/api/service/ProductService.java
new file mode 100644
index 0000000..dab47dd
--- /dev/null
+++ b/src/main/java/shopping/api/service/ProductService.java
@@ -0,0 +1,32 @@
+package shopping.api.service;
+
+import org.springframework.stereotype.Service;
+import shopping.api.entity.CreateProductRequest;
+import shopping.domain.entity.Product;
+import shopping.domain.util.IDGenarator;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicLong;
+
+@Service
+public class ProductService {
+
+    private final Map<Long, Product> database = new HashMap<>();
+
+    public Product save(CreateProductRequest createProductRequest) {
+        long id = IDGenarator.generate();
+
+        Product product = new Product(id, createProductRequest.getName(), createProductRequest.getPrice(), createProductRequest.getImageUrl());
+        database.put(id, product);
+
+        return product;
+    }
+
+    public Product findById(Long id) throws RuntimeException{
+        if(database.isEmpty())
+            throw new RuntimeException("등록된 상품이 없습니다.");
+
+        return database.get(id);
+    }
+}
diff --git a/src/main/java/shopping/domain/entity/ImageUrl.java b/src/main/java/shopping/domain/entity/ImageUrl.java
new file mode 100644
index 0000000..a454b84
--- /dev/null
+++ b/src/main/java/shopping/domain/entity/ImageUrl.java
@@ -0,0 +1,22 @@
+package shopping.domain.entity;
+
+import java.util.regex.Pattern;
+
+public class ImageUrl {
+
+    private final String regex = "^(https?:\\/\\/.*\\.(png|jpg))$";
+    private final Pattern pattern = Pattern.compile(regex);
+
+    private String value;
+
+    public ImageUrl(String value) throws IllegalArgumentException{
+        if(!pattern.matcher(value).matches())
+            throw new IllegalArgumentException("잘못된 이미지 경로입니다.");
+
+        this.value = value;
+    }
+
+    public String getValue() {
+        return value;
+    }
+}
diff --git a/src/main/java/shopping/domain/entity/Name.java b/src/main/java/shopping/domain/entity/Name.java
new file mode 100644
index 0000000..8745034
--- /dev/null
+++ b/src/main/java/shopping/domain/entity/Name.java
@@ -0,0 +1,21 @@
+package shopping.domain.entity;
+
+import java.util.regex.Pattern;
+
+public class Name {
+
+    private final String regx = "^[a-zA-Z0-9가-힣 ()\\[\\]+\\-&/_]{1,15}$";
+    private final Pattern pattern = Pattern.compile(regx);
+    private String value;
+
+    public Name(String value) throws IllegalArgumentException{
+        if(!pattern.matcher(value).matches())
+            throw new IllegalArgumentException("상품 명이 올바르지 않습니다.");
+
+        this.value = value;
+    }
+
+    public String getValue() {
+        return value;
+    }
+}
diff --git a/src/main/java/shopping/domain/entity/Price.java b/src/main/java/shopping/domain/entity/Price.java
new file mode 100644
index 0000000..ec5bc06
--- /dev/null
+++ b/src/main/java/shopping/domain/entity/Price.java
@@ -0,0 +1,16 @@
+package shopping.domain.entity;
+
+public class Price {
+
+    private int value;
+
+    public Price(int value) throws IllegalArgumentException{
+        if(value < 0)
+            throw new IllegalArgumentException("상품 가격은 음수가 될 수 없습니다.");
+        this.value = value;
+    }
+
+    public int getValue() {
+        return value;
+    }
+}
diff --git a/src/main/java/shopping/domain/entity/Product.java b/src/main/java/shopping/domain/entity/Product.java
new file mode 100644
index 0000000..e06aae8
--- /dev/null
+++ b/src/main/java/shopping/domain/entity/Product.java
@@ -0,0 +1,47 @@
+package shopping.domain.entity;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+public class Product {
+
+    private Long id;
+    private Name name;
+    private Price price;
+    private ImageUrl imageUrl;
+
+    public Product(Long id, Product product) {
+        this.id = id;
+        this.name = product.getName();
+        this.price = product.getPrice();
+        this.imageUrl = product.getImageUrl();
+    }
+
+    public Product(Long id, Name name, Price price, ImageUrl imageUrl) {
+        this.id = id;
+        this.name = name;
+        this.price = price;
+        this.imageUrl = imageUrl;
+    }
+
+    public Product(Name name, Price price, ImageUrl imageUrl) {
+        this.name = name;
+        this.price = price;
+        this.imageUrl = imageUrl;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public Name getName() {
+        return name;
+    }
+
+    public Price getPrice() {
+        return price;
+    }
+
+    public ImageUrl getImageUrl() {
+        return imageUrl;
+    }
+}
diff --git a/src/main/java/shopping/domain/util/IDGenarator.java b/src/main/java/shopping/domain/util/IDGenarator.java
new file mode 100644
index 0000000..d7706d2
--- /dev/null
+++ b/src/main/java/shopping/domain/util/IDGenarator.java
@@ -0,0 +1,13 @@
+package shopping.domain.util;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+public class IDGenarator {
+
+    private static final AtomicLong id = new AtomicLong(1);
+
+    public static long generate() {
+        return id.getAndIncrement();
+    }
+
+}
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index c33078c..5ba017b 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -1 +1 @@
-spring.application.name=spring-shopping
+spring.application.name=spring-shopping
\ No newline at end of file
diff --git a/src/main/resources/schema.sql b/src/main/resources/schema.sql
new file mode 100644
index 0000000..b548312
--- /dev/null
+++ b/src/main/resources/schema.sql
@@ -0,0 +1,6 @@
+create table products (
+    id long auto_increment primary key ,
+    name varchar(15),
+    price int,
+    image_url varchar(1000)
+);
\ No newline at end of file
diff --git a/src/test/java/shopping/api/entity/ImageUrlTest.java b/src/test/java/shopping/api/entity/ImageUrlTest.java
new file mode 100644
index 0000000..5145197
--- /dev/null
+++ b/src/test/java/shopping/api/entity/ImageUrlTest.java
@@ -0,0 +1,18 @@
+package shopping.api.entity;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import shopping.domain.entity.ImageUrl;
+
+import static org.assertj.core.api.Assertions.*;
+
+public class ImageUrlTest {
+
+    @Test
+    @DisplayName("이미지 경로는 http://나 https://로 시작하고 이미지 확장자로 끝나야 한다. (.png, ~~~)")
+    void constructorTest() {
+
+//        assertThat(new ImageUrl("www.naver.com").getValue()).isEqualTo(new ImageUrl("www.naver.com").getValue());
+        assertThatIllegalArgumentException().isThrownBy(() -> new ImageUrl("http://www.naver.com/image"));
+    }
+}
diff --git a/src/test/java/shopping/api/entity/NameTest.java b/src/test/java/shopping/api/entity/NameTest.java
new file mode 100644
index 0000000..9e5f609
--- /dev/null
+++ b/src/test/java/shopping/api/entity/NameTest.java
@@ -0,0 +1,24 @@
+package shopping.api.entity;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import shopping.domain.entity.Name;
+
+import static org.assertj.core.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class NameTest {
+
+    @Test
+    @DisplayName("이름은 15자를 넘으면 안되고, 특수문자를 일부 허용한다.")
+    void constructorTest() {
+        try {
+            new Name("안녕하세요감사해요잘있어요다시만나요안녕하세요");
+        } catch (IllegalArgumentException e) {
+            System.out.println(e.getMessage());
+            assertEquals("상품 명이 올바르지 않습니다.", e.getMessage());
+        }
+
+    }
+}
diff --git a/src/test/java/shopping/api/entity/ProductTest.java b/src/test/java/shopping/api/entity/ProductTest.java
new file mode 100644
index 0000000..c95e40b
--- /dev/null
+++ b/src/test/java/shopping/api/entity/ProductTest.java
@@ -0,0 +1,28 @@
+package shopping.api.entity;
+
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import shopping.domain.entity.ImageUrl;
+import shopping.domain.entity.Name;
+import shopping.domain.entity.Price;
+import shopping.domain.entity.Product;
+
+import static org.assertj.core.api.Assertions.*;
+
+
+public class ProductTest {
+
+    @Test
+    @DisplayName("상품은 이름, 가격, 이미지를 가지고 있어야 한다.")
+    void constructorTest() {
+        Product product = new Product(new Name("책"), new Price(2000), new ImageUrl("https://image.png"));
+
+        assertThat(product.getName().getValue()).isEqualTo(new Name("책").getValue());
+        assertThat(product.getPrice().getValue()).isEqualTo(new Price(2000).getValue());
+        assertThat(product.getImageUrl().getValue()).isEqualTo(new ImageUrl("https://image.png").getValue());
+
+    }
+
+
+}
diff --git a/src/test/java/shopping/api/service/ProductServiceTest.java b/src/test/java/shopping/api/service/ProductServiceTest.java
new file mode 100644
index 0000000..1bd230a
--- /dev/null
+++ b/src/test/java/shopping/api/service/ProductServiceTest.java
@@ -0,0 +1,46 @@
+package shopping.api.service;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import shopping.api.entity.CreateProductRequest;
+import shopping.domain.entity.ImageUrl;
+import shopping.domain.entity.Name;
+import shopping.domain.entity.Price;
+import shopping.domain.entity.Product;
+
+import static org.assertj.core.api.Assertions.*;
+
+@SpringBootTest
+public class ProductServiceTest {
+
+    @Autowired
+    private ProductService productService;
+
+    @Test
+    @DisplayName("상품을 조회한다.")
+    void findProductTest() {
+        Product product = 상품_생성("책",2000,"http://image.png");
+
+        Product actual = productService.findById(product.getId());
+
+        assertThat(actual.getName().getValue()).isEqualTo(product.getName().getValue());
+        assertThat(actual.getPrice().getValue()).isEqualTo(product.getPrice().getValue());
+        assertThat(actual.getImageUrl().getValue()).isEqualTo(product.getImageUrl().getValue());
+    }
+
+
+    Product 상품_생성(String name, int price, String imageUrl) {
+        CreateProductRequest createProductRequest = new CreateProductRequest(new Name(name), new Price(price), new ImageUrl(imageUrl));
+
+
+        Product savedProduct = productService.save(createProductRequest);
+        
+        assertThat(savedProduct.getName().getValue()).isEqualTo(name);
+        assertThat(savedProduct.getPrice().getValue()).isEqualTo(price);
+        assertThat(savedProduct.getImageUrl().getValue()).isEqualTo(imageUrl);
+
+        return savedProduct;
+    }
+}