diff --git a/app/src/main/java/com/example/citrusclient/rest/FavoritesRest.java b/app/src/main/java/com/example/citrusclient/rest/FavoritesRest.java
index 8cf4caa..0e3dd95 100644
--- a/app/src/main/java/com/example/citrusclient/rest/FavoritesRest.java
+++ b/app/src/main/java/com/example/citrusclient/rest/FavoritesRest.java
@@ -1,4 +1,62 @@
 package com.example.citrusclient.rest;
 
+import java.util.HashMap;
+import java.util.HashSet;
+
+import retrofit2.Call;
+import retrofit2.http.DELETE;
+import retrofit2.http.Field;
+import retrofit2.http.FormUrlEncoded;
+import retrofit2.http.GET;
+import retrofit2.http.PUT;
+import retrofit2.http.Path;
+import retrofit2.http.Query;
+
 public interface FavoritesRest {
+    //主{account_id}がいいねした本の一覧
+    @FormUrlEncoded
+    @GET("accounts/{account_id}/favorites")
+    Call<HashMap<String, HashSet<Integer>>> getFavoritesBooks(
+            @Path("account_id") String accountId,
+            @Query("token") String token
+    );
+
+    //主{account_id}がいいねした誰か{other_account_id}の本の一覧
+    @FormUrlEncoded
+    @GET("accounts/{account_id}/favorites/{other_account_id}")
+    Call<HashSet<Integer>> getFavoritesBooksById(
+            @Path("account_id") String accountId,
+            @Path("other_account_id") String otherAccountId,
+            @Query("token") String token
+    );
+
+    //主{account_id}のある本{book_id}をいいねした人の一覧
+    @FormUrlEncoded
+    @GET("accounts/{account_id}/books/{book_id}/favorited")
+    Call<HashSet<String>> getFavoritedAccount(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Query("token") String token
+    );
+
+    //主{account_id}のある本{book_id}を他の人{other_account_id}がいいねする
+    @FormUrlEncoded
+    @PUT("accounts/{account_id}/books/{book_id}/favorited/{other_account_id}")
+    Call<Void> putFavorite(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Path("other_account_id") String otherAccountId,
+            @Field("token") String token
+    );
+
+    //主{account_id}のある本{book_id}を他の人{other_account_id}がいいねを解除する
+    @FormUrlEncoded
+    @DELETE("accounts/{account_id}/books/{book_id}/favorited/{other_account_id}")
+    Call<Void> removeFavorite(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Path("other_account_id") String otherAccountId,
+            @Query("token") String token
+    );
+
 }