diff --git a/src/main/java/org/ntlab/citrusserver/repositories/TodoManager.java b/src/main/java/org/ntlab/citrusserver/repositories/TodoManager.java
index 22ee382..38d8fa5 100644
--- a/src/main/java/org/ntlab/citrusserver/repositories/TodoManager.java
+++ b/src/main/java/org/ntlab/citrusserver/repositories/TodoManager.java
@@ -56,15 +56,8 @@
      * @param month 月
      * @return そのアカウントの本に所属するtodoのうち、指定した年月のtodoを返します
      */
-    public HashMap<Integer, Todo> getTodosByMonth(String accountId, int bookId, int year, int month, String token){
-        HashMap<Integer, Todo> result = new HashMap<>();
-        var yearMonthMap = todos.get(accountId).get(bookId).get(year).get(month);
-        for(var dayValues : yearMonthMap.values()){
-            for(int todoId : dayValues.keySet()){
-                result.put(todoId, dayValues.get(todoId));
-            }
-        }
-        return result;
+    public HashMap<Integer, HashMap<Integer, Todo>> getTodosByMonth(String accountId, int bookId, int year, int month, String token){
+        return todos.get(accountId).get(bookId).get(year).get(month);
     }
 
     /**
@@ -75,7 +68,7 @@
      * @param yearMonth 年月を-で区切った文字列(yyyy-mm)
      * @return そのアカウントの本に所属するtodoのうち、指定した年月のtodoを返します
      */
-    public HashMap<Integer, Todo> getTodosByMonth(String accountId, int bookId, String yearMonth, String token){
+    public HashMap<Integer, HashMap<Integer, Todo>> getTodosByMonth(String accountId, int bookId, String yearMonth, String token){
         String[] yearMonths = yearMonth.split("-");
         int year = Integer.parseInt(yearMonths[0]);
         int month = Integer.parseInt(yearMonths[1]);
diff --git a/src/main/java/org/ntlab/citrusserver/resources/TodoRest.java b/src/main/java/org/ntlab/citrusserver/resources/TodoRest.java
index 5990081..ffea96d 100644
--- a/src/main/java/org/ntlab/citrusserver/resources/TodoRest.java
+++ b/src/main/java/org/ntlab/citrusserver/resources/TodoRest.java
@@ -45,7 +45,7 @@
     @Path("/accounts/{account_id}/books/{book_id}/todos/{year}/{month}")
     @GET
     @Produces(MediaType.APPLICATION_JSON)
-    public HashMap<Integer, Todo> getTodoMonth(@PathParam("account_id") String account_id, @PathParam("book_id") Integer book_id, @PathParam("year") Integer year, @PathParam("month") Integer month, @QueryParam("token") String token) {
+    public HashMap<Integer, HashMap<Integer, Todo>> getTodoMonth(@PathParam("account_id") String account_id, @PathParam("book_id") Integer book_id, @PathParam("year") Integer year, @PathParam("month") Integer month, @QueryParam("token") String token) {
         return todoManager.getTodosByMonth(account_id, book_id, year, month,token);
     }
 
@@ -81,13 +81,18 @@
     @PUT
     @Path("/accounts/{account_id}/books/{book_id}/todos/{year}/{month}/{day}/{todo_id}/check")
     @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
-    public void putTodo(@PathParam("account_id") String account_id, @PathParam("book_id") Integer book_id, @PathParam("year") Integer year, @PathParam("month") Integer month, @PathParam("day") Integer day,@PathParam("todo_id") Integer todo_id, @FormParam("check") boolean check, @QueryParam("token") String token){
+    public void setCheck(@PathParam("account_id") String account_id, @PathParam("book_id") Integer book_id, @PathParam("year") Integer year, @PathParam("month") Integer month, @PathParam("day") Integer day,@PathParam("todo_id") Integer todo_id, @FormParam("check") boolean check, @QueryParam("token") String token){
          todoManager.setCheck(account_id, book_id, year, month, day, todo_id,check,token);
     }
 
     //delete追加必要
-
-
+    //本のtodoを年月日とtodo_idを指定してそのtodoを削除する
+    @DELETE
+    @Path("/accounts/{account_id}/books/{book_id}/todos/{year}/{month}/{day}/{todo_id}")
+    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
+    public void deleteTodoById(@PathParam("account_id") String account_id, @PathParam("book_id") Integer book_id, @PathParam("year") Integer year, @PathParam("month") Integer month, @PathParam("day") Integer day, @PathParam("todo_id") Integer todo_id, @QueryParam("token") String token){
+        todoManager.deleteTodoById(account_id, book_id, year, month, day, todo_id,token);
+    }