diff --git a/src/main/java/org/ntlab/amaryllis/server/entities/Category.java b/src/main/java/org/ntlab/amaryllis/server/entities/Category.java
index 06a0dd4..5995619 100644
--- a/src/main/java/org/ntlab/amaryllis/server/entities/Category.java
+++ b/src/main/java/org/ntlab/amaryllis/server/entities/Category.java
@@ -1,18 +1,40 @@
 package org.ntlab.amaryllis.server.entities;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+import java.util.ArrayList;
+
 import static java.util.UUID.randomUUID;
 
 public class Category {
-    String categoryId;
-    String categoryName;
+    private String categoryId;
+    private String categoryName;
+    private ArrayList<String> categorylist = new ArrayList<>();//そのcategoryが登録されているvidのリスト
 
     public Category(String categoryName) {
         this.categoryId = randomUUID().toString();
-        this.categoryId = categoryName;
+        this.categoryName = categoryName;
     }
 
-    public void setCategory(String categoryId){
-        this.categoryName = categoryId;
+    public String getCategoryId() {
+        return categoryId;
+    }
+    public String getCategoryName() {
+        return categoryName;
+    }
+    public ArrayList<String> getCategorylist() {
+        return categorylist;
+    }
+    public void addCategorylist(String vid) {
+        for (String a : categorylist) {
+            if (a.equals(vid)) {
+                return;
+            }
+            this.categorylist.add(vid);
+        }
+    }
+    public void removeCategorylist(String vid) {
+        categorylist.remove(vid);
     }
 
-}
+}
\ No newline at end of file
diff --git a/src/main/java/org/ntlab/amaryllis/server/models/Categories.java b/src/main/java/org/ntlab/amaryllis/server/models/Categories.java
index 392ee5f..baf6d2d 100644
--- a/src/main/java/org/ntlab/amaryllis/server/models/Categories.java
+++ b/src/main/java/org/ntlab/amaryllis/server/models/Categories.java
@@ -1,6 +1,39 @@
 package org.ntlab.amaryllis.server.models;
 
-public class Categories {
+import org.ntlab.amaryllis.server.entities.Category;
+import org.ntlab.amaryllis.server.entities.Voicememo;
+import java.util.ArrayList;
 
+public class Categories {
+    private static org.ntlab.amaryllis.server.models.Categories theInstance = null;
+    private static ArrayList<Category> categories = new ArrayList<>();
+
+    private Categories() {
+        createCategory("旅行");
+        createCategory("音楽");
+        createCategory("グルメ");
+    }
+
+    public static Categories getInstance() {
+        if (theInstance == null) {
+            theInstance = new Categories();
+        }
+        return theInstance;
+    }
+
+    public Category getCategory(String categoryId){
+        for (Category a : categories) {
+            if (a.getCategoryId().equals(categoryId)) {
+                return a;
+            }
+        }
+        return null;
+    }
+
+    public Category createCategory(String categoryName) {
+        Category newCategory = new Category(categoryName);
+        categories.add(newCategory);
+        return newCategory;
+    }
 
 }
diff --git a/src/main/java/org/ntlab/amaryllis/server/resources/CategoriesRest.java b/src/main/java/org/ntlab/amaryllis/server/resources/CategoriesRest.java
new file mode 100644
index 0000000..c5a809b
--- /dev/null
+++ b/src/main/java/org/ntlab/amaryllis/server/resources/CategoriesRest.java
@@ -0,0 +1,23 @@
+package org.ntlab.amaryllis.server.resources;
+
+import org.ntlab.amaryllis.server.entities.Category;
+import org.ntlab.amaryllis.server.models.Categories;
+import org.springframework.stereotype.Component;
+import javax.ws.rs.*;
+import javax.ws.rs.core.MediaType;
+import java.util.ArrayList;
+
+@Component
+@Path("/categories")
+public class CategoriesRest {
+    Categories categories= Categories.getInstance();
+
+    @GET
+    @Produces(MediaType.APPLICATION_JSON)
+    public Categories getCategories() {
+        return categories;
+    }
+
+}
+
+