diff --git a/app/src/main/java/com/example/citrusclient/rest/ScheduleRest.java b/app/src/main/java/com/example/citrusclient/rest/ScheduleRest.java
index be891fe..bfc32d4 100644
--- a/app/src/main/java/com/example/citrusclient/rest/ScheduleRest.java
+++ b/app/src/main/java/com/example/citrusclient/rest/ScheduleRest.java
@@ -58,6 +58,17 @@
         @Query("token") String token
     );
 
+    @GET(BASE_URL + "/{year}/{month}")
+    Call<HashMap<Integer, //日
+            HashMap<Integer, //Id
+                    Schedule>>> getScheduleByMonthAndBookId(
+            @Path("account_id") String accountId,
+            @Path("year") int year,
+            @Path("month") int month,
+            @Query("book_id") int bookId,
+            @Query("token") String token
+    );
+
     @GET(BASE_URL + "/{year}/{month}/{day}/{schedule_id}")
     Call<Schedule> getScheduleById(
         @Path("account_id") String accountId,
diff --git a/app/src/main/java/com/example/citrusclient/viewmodels/ScheduleViewModel.java b/app/src/main/java/com/example/citrusclient/viewmodels/ScheduleViewModel.java
index 700826f..f793ff9 100644
--- a/app/src/main/java/com/example/citrusclient/viewmodels/ScheduleViewModel.java
+++ b/app/src/main/java/com/example/citrusclient/viewmodels/ScheduleViewModel.java
@@ -193,6 +193,34 @@
         });
     }
 
+    /**
+     * アカウントと年と月を指定してschedulesByMonthを更新する
+     *
+     * @param accountId　アカウントid
+     * @param year 年
+     * @param month 月
+     * @param token トークン
+     * @param bookId ほんのid
+     */
+    public void updateSchedulesByMonthAndBookId(String accountId, int year, int month, String token, int bookId){
+        Call<HashMap<Integer, HashMap<Integer, Schedule>>> call = scheduleRest.getScheduleByMonthAndBookId(accountId, year, month, bookId, token);
+        call.enqueue(new Callback<HashMap<Integer, HashMap<Integer, Schedule>>>() {
+            @Override
+            public void onResponse(Call<HashMap<Integer, HashMap<Integer, Schedule>>> call, Response<HashMap<Integer, HashMap<Integer, Schedule>>> response) {
+                if(response.isSuccessful()){
+                    schedulesByMonth.setValue(response.body());
+                } else {
+                    schedulesByMonth.setValue(new HashMap<>());
+                    errorLiveData.setValue(response.message());
+                }
+            }
+            @Override
+            public void onFailure(Call<HashMap<Integer, HashMap<Integer, Schedule>>> call, Throwable t) {
+                errorLiveData.setValue(t.getMessage());
+            }
+        });
+    }
+
 
     /**
      * アカウントと年と月と日を指定してスケジュールを更新する