diff --git a/app/src/main/java/com/example/citrusclient/rest/TodosRest.java b/app/src/main/java/com/example/citrusclient/rest/TodosRest.java
index 3b38e87..a23a4f3 100644
--- a/app/src/main/java/com/example/citrusclient/rest/TodosRest.java
+++ b/app/src/main/java/com/example/citrusclient/rest/TodosRest.java
@@ -80,6 +80,22 @@
             @Field("token") String token
     );
 
+    @FormUrlEncoded
+    @PUT("accounts/{account_id}/books/{book_id}/todos/{year}/{month}/{day}/{todo_id}")
+    Call<Void> setTodo(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Path("year") Integer year,
+            @Path("month") Integer month,
+            @Path("day") Integer day,
+            @Path("todo_id") Integer todoId,
+            @Field("title") String title,
+            @Field("new_year") Integer newYear,
+            @Field("new_month") Integer newMonth,
+            @Field("new_day") Integer newDay,
+            @Field("token") String token
+    );
+
     @DELETE("accounts/{account_id}/books/{book_id}/todos/{year}/{month}/{day}/{todo_id}")
     Call<Void> deleteTodoById(
             @Path("account_id") String accountId,
diff --git a/app/src/main/java/com/example/citrusclient/viewmodels/TodosViewModel.java b/app/src/main/java/com/example/citrusclient/viewmodels/TodosViewModel.java
index bfb88d3..857f912 100644
--- a/app/src/main/java/com/example/citrusclient/viewmodels/TodosViewModel.java
+++ b/app/src/main/java/com/example/citrusclient/viewmodels/TodosViewModel.java
@@ -27,6 +27,7 @@
     private final MutableLiveData<HashMap<Integer, Todo>> todosByDayLiveData;
     private final MutableLiveData<Todo> todoLiveData;
     private final MutableLiveData<Boolean> successSetCheckLiveData;
+    private final MutableLiveData<Boolean> successSetTodoLiveData;
     private final MutableLiveData<Boolean> successDeleteTodoLiveData;
     private final MutableLiveData<String> errorLiveData;
 
@@ -43,6 +44,7 @@
         this.todosByDayLiveData = new MutableLiveData<>();
         this.todoLiveData = new MutableLiveData<>();
         this.successSetCheckLiveData = new MutableLiveData<>();
+        this.successSetTodoLiveData = new MutableLiveData<>();
         this.successDeleteTodoLiveData = new MutableLiveData<>();
         this.errorLiveData = new MutableLiveData<>();
     }
@@ -56,6 +58,7 @@
     public MutableLiveData<HashMap<Integer, Todo>> getTodosByDayLiveData() {return todosByDayLiveData;}
     public MutableLiveData<Todo> getTodoLiveData() {return todoLiveData;}
     public MutableLiveData<Boolean> getSuccessSetCheckLiveData() {return successSetCheckLiveData;}
+    public MutableLiveData<Boolean> getSuccessSetTodoLiveData() {return successSetTodoLiveData;}
     public MutableLiveData<Boolean> getSuccessDeleteTodoLiveData() {return successDeleteTodoLiveData;}
     public MutableLiveData<String> getErrorLiveData() {return errorLiveData;}
 
@@ -197,6 +200,28 @@
         });
     }
 
+    public void setTodo(String accountId, Integer BookId, Integer year, Integer month, Integer day,
+                        Integer todoId, String title, Integer newYear,Integer newMonth,Integer newDay, String token)
+    {
+        Call<Void> call = todosRest.setTodo(accountId, BookId, year, month, day, todoId, title, newYear, newMonth, newDay, token);
+        call.enqueue(new Callback<Void>() {
+            @Override
+            public void onResponse(Call<Void> call, Response<Void> response) {
+                if (response.isSuccessful()) {
+                    System.out.println("Success: setTodo");
+                    successSetTodoLiveData.setValue(true);
+                } else {
+                    System.out.println("Error: setTodo" + response.code());
+                }
+            }
+            @Override
+            public void onFailure(Call<Void> call, Throwable t) {
+                System.out.println("NetworkError : setTodo" + t);
+                errorLiveData.setValue(parseStatusCode(-1));
+            }
+        });
+    }
+
     public void deleteTodo(String accountId, Integer BookId, Integer year, Integer month,
                            Integer day, Integer todoId, String token)
     {
diff --git a/app/src/main/java/com/example/citrusclient/views/CreateTodoFragment.java b/app/src/main/java/com/example/citrusclient/views/CreateTodoFragment.java
index ed88dab..5aef3d3 100644
--- a/app/src/main/java/com/example/citrusclient/views/CreateTodoFragment.java
+++ b/app/src/main/java/com/example/citrusclient/views/CreateTodoFragment.java
@@ -244,8 +244,17 @@
                 Snackbar.make(view, "本を選択してください", Snackbar.LENGTH_SHORT).show();
                 return;
             }
-            todosViewModel.createTodo(accountId,spinner.getSelectedItemPosition(),year,month,day,title,token);
-            ((MainActivity)getActivity()).backFragment();
+            if(isEdit){
+                //編集時
+                todosViewModel.setTodo(accountId,spinner.getSelectedItemPosition(),editTodo.getYear(),editTodo.getMonth(),
+                        editTodo.getDay(), editTodo.getTodoId(), title, year, month, day, token);
+                ((MainActivity)getActivity()).backFragment();
+            }else{
+                //追加時
+                todosViewModel.createTodo(accountId,spinner.getSelectedItemPosition(),year,month,day,title,token);
+                ((MainActivity)getActivity()).backFragment();
+            }
+
         });
     }