diff --git a/src/app/[slug]/[date]/page.tsx b/src/app/[slug]/[date]/page.tsx
index e66bb19..98c2bca 100644
--- a/src/app/[slug]/[date]/page.tsx
+++ b/src/app/[slug]/[date]/page.tsx
@@ -42,7 +42,7 @@ export default async function Page({ params }: Props) {
               )}
             </div>
             <div className="w-[100%] md:w-[200px]">
-              <TaskList />
+              <TaskList objectiveId={objective._id} />
             </div>
           </div>
         </div>
diff --git a/src/app/_actions/taskActions.ts b/src/app/_actions/taskActions.ts
new file mode 100644
index 0000000..a4f81fc
--- /dev/null
+++ b/src/app/_actions/taskActions.ts
@@ -0,0 +1,26 @@
+'use server';
+
+import { API_TASK } from '../_constants/apiUrls';
+import { apiPost } from '~/libs/apiClient';
+import { Task } from '~/domains/Task';
+
+export const postTask = async ({
+  body,
+  title,
+  dueDate,
+  objectiveId,
+}: {
+  body: string;
+  title: string;
+  dueDate: Date;
+  objectiveId: string;
+}) => {
+  return await apiPost<{ task: Task }>(API_TASK(), {
+    body: JSON.stringify({
+      body,
+      title,
+      dueDate,
+      objectiveId,
+    }),
+  });
+};
diff --git a/src/app/_components/domains/Nippo/NippoEditor/NippoEditor.tsx b/src/app/_components/domains/Nippo/NippoEditor/NippoEditor.tsx
index 6b9570d..f88f9c9 100644
--- a/src/app/_components/domains/Nippo/NippoEditor/NippoEditor.tsx
+++ b/src/app/_components/domains/Nippo/NippoEditor/NippoEditor.tsx
@@ -3,7 +3,7 @@
 import { FC, useCallback } from 'react';
 import { postNippo } from '~/app/_actions/nippoActions';
 import { Nippo } from '~/domains/Nippo';
-import { Editor } from '~/app/_components/uiParts/Editor';
+import { DebounceEditor } from '~/app/_components/uiParts/Editor/DebounceEditor';
 
 type Props = {
   objectiveId: string;
@@ -19,5 +19,5 @@ export const NippoEditor: FC<Props> = ({ objectiveId, nippo, date }) => {
     [date, objectiveId],
   );
 
-  return <Editor body={nippo?.body} onChange={handleEditorChange} placeholder="振り返りを記入しましょう！" />;
+  return <DebounceEditor body={nippo?.body} onChange={handleEditorChange} placeholder="振り返りを記入しましょう！" />;
 };
diff --git a/src/app/_components/domains/Task/CreateTaskModal/CreateTaskModal.tsx b/src/app/_components/domains/Task/CreateTaskModal/CreateTaskModal.tsx
index 9a41969..c6b9cd1 100644
--- a/src/app/_components/domains/Task/CreateTaskModal/CreateTaskModal.tsx
+++ b/src/app/_components/domains/Task/CreateTaskModal/CreateTaskModal.tsx
@@ -1,28 +1,89 @@
 'use client';
 
-import { FC, useCallback } from 'react';
-import { Input, Modal, ModalBody, ModalContent } from '@nextui-org/react';
+import { FC, useCallback, useState } from 'react';
+import { Button, Input, Modal, ModalBody, ModalContent, ModalFooter } from '@nextui-org/react';
+import { Controller, SubmitHandler, useForm } from 'react-hook-form';
 import { TaskEditor } from '../TaskEditor';
-import { Task } from '~/domains/Task';
+import { postTask } from '~/app/_actions/taskActions';
 
 type Props = {
   isOpen: boolean;
   onOpenChange: () => void;
-  currentTask?: Task;
+  objectiveId: string;
 };
 
-export const CreateModal: FC<Props> = ({ isOpen, onOpenChange, currentTask }) => {
+interface IFormInput {
+  title: string;
+  body: string;
+}
+
+export const CreateModal: FC<Props> = ({ isOpen, onOpenChange, objectiveId }) => {
+  const [isLoading, setIsLoading] = useState(false);
+
+  const { control, formState, getValues, handleSubmit, reset } = useForm<IFormInput>({
+    defaultValues: {
+      title: '',
+      body: '',
+    },
+  });
+
+  console.log(getValues().body);
+
   const handleOpenChange = useCallback(() => {
+    reset();
     onOpenChange();
-  }, [onOpenChange]);
+  }, [onOpenChange, reset]);
+
+  const onSubmit: SubmitHandler<IFormInput> = useCallback(
+    async (inputData) => {
+      if (isLoading) return;
+      setIsLoading(true);
+      postTask({ title: inputData.title, body: inputData.body, dueDate: new Date(), objectiveId })
+        .catch((error) => {
+          // TODO: 本来はコンソールに出すのではなく、ユーザーにエラーを通知する
+          console.error(error);
+        })
+        .then(() => {
+          handleOpenChange();
+        })
+        .finally(() => {
+          setIsLoading(false);
+        });
+    },
+    [handleOpenChange, isLoading, objectiveId],
+  );
 
   return (
     <Modal isOpen={isOpen} onOpenChange={handleOpenChange} placement="center" hideCloseButton size="xl">
       <ModalContent>
         <ModalBody className="my-[8px]">
-          <Input defaultValue={currentTask?.title} placeholder="タスクの名前" variant="underlined" size="lg" />
-          <TaskEditor task={currentTask} />
+          <Controller
+            name="title"
+            control={control}
+            rules={{ required: true }}
+            render={({ field, fieldState }) => (
+              <Input
+                {...field}
+                placeholder="タスクの名前"
+                isInvalid={fieldState.isDirty && field.value.length === 0}
+                errorMessage={fieldState.isDirty && field.value.length === 0 && 'タイトルを入力してください'}
+                variant="underlined"
+                size="lg"
+              />
+            )}
+          />
+          <Controller
+            name="body"
+            control={control}
+            rules={{ required: true, minLength: 1 }}
+            render={({ field }) => <TaskEditor onChangeText={async (body) => field.onChange(body)} />}
+          />
         </ModalBody>
+        <ModalFooter>
+          <Button color="primary" onClick={handleSubmit(onSubmit)} isLoading={isLoading} isDisabled={!formState.isValid}>
+            タスクを作成
+          </Button>
+        </ModalFooter>
       </ModalContent>
     </Modal>
   );
diff --git a/src/app/_components/domains/Task/TaskEditor/TaskEditor.tsx b/src/app/_components/domains/Task/TaskEditor/TaskEditor.tsx
index d7f6008..3898019 100644
--- a/src/app/_components/domains/Task/TaskEditor/TaskEditor.tsx
+++ b/src/app/_components/domains/Task/TaskEditor/TaskEditor.tsx
@@ -1,17 +1,12 @@
 'use client';
 
-import { FC, useCallback } from 'react';
+import { FC } from 'react';
 import { Editor } from '~/app/_components/uiParts/Editor';
-import { Task } from '~/domains/Task';
 
 type Props = {
-  task?: Task;
+  onChangeText: (body: string) => Promise<void>;
 };
 
-export const TaskEditor: FC<Props> = ({ task }) => {
-  const handleEditorChange = useCallback(async (body: string) => {
-    console.log(body);
-  }, []);
-
-  return <Editor body={task?.body} onChange={handleEditorChange} placeholder="タスクの内容を記入しましょう" />;
+export const TaskEditor: FC<Props> = ({ onChangeText }) => {
+  return <Editor onChange={onChangeText} placeholder="タスクの内容を記入しましょう" />;
 };
diff --git a/src/app/_components/domains/Task/TaskList/TaskList.tsx b/src/app/_components/domains/Task/TaskList/TaskList.tsx
index b04c476..538a932 100644
--- a/src/app/_components/domains/Task/TaskList/TaskList.tsx
+++ b/src/app/_components/domains/Task/TaskList/TaskList.tsx
@@ -5,7 +5,11 @@ import { FC } from 'react';
 import { CreateModal } from '../CreateTaskModal';
 import { Icon } from '~/app/_components/uiParts/icons';
 
-export const TaskList: FC = () => {
+type Props = {
+  objectiveId: string;
+};
+
+export const TaskList: FC<Props> = ({ objectiveId }) => {
   const { isOpen, onOpen, onOpenChange } = useDisclosure();
 
   return (
@@ -17,7 +21,7 @@ export const TaskList: FC = () => {
       <Button className="mt-[8px]" size="sm" color="primary" variant="light" startContent={<Icon icon="PLUS" />} onClick={() => onOpen()}>
         タスクの追加
       </Button>
-      <CreateModal isOpen={isOpen} onOpenChange={onOpenChange} />
+      <CreateModal isOpen={isOpen} onOpenChange={onOpenChange} objectiveId={objectiveId} />
     </div>
   );
 };
diff --git a/src/app/_components/uiParts/Editor/DebounceEditor.tsx b/src/app/_components/uiParts/Editor/DebounceEditor.tsx
new file mode 100644
index 0000000..ae7b14b
--- /dev/null
+++ b/src/app/_components/uiParts/Editor/DebounceEditor.tsx
@@ -0,0 +1,31 @@
+'use client';
+
+import './styles.scss';
+
+import { useEffect, useState, FC, useCallback } from 'react';
+import { Editor } from './Editor';
+import { useDebounce } from '~/libs/useDebounce';
+
+type Props = {
+  body?: string;
+  placeholder: string;
+  onChange: (body: string) => Promise<void>;
+};
+
+export const DebounceEditor: FC<Props> = ({ body, placeholder, onChange }) => {
+  const [inputText, setInputText] = useState<string>();
+  const debouncedInputText = useDebounce({ value: inputText, delay: 200 });
+
+  const handleEditorChange = useCallback(
+    async (body: string) => {
+      await onChange(body);
+    },
+    [onChange],
+  );
+
+  useEffect(() => {
+    debouncedInputText && handleEditorChange(debouncedInputText);
+  }, [debouncedInputText, handleEditorChange]);
+
+  return <Editor body={body} placeholder={placeholder} onChange={(body) => setInputText(body)} />;
+};
diff --git a/src/app/_components/uiParts/Editor/Editor.tsx b/src/app/_components/uiParts/Editor/Editor.tsx
index 6472a2c..fab84e9 100644
--- a/src/app/_components/uiParts/Editor/Editor.tsx
+++ b/src/app/_components/uiParts/Editor/Editor.tsx
@@ -4,36 +4,21 @@ import './styles.scss';
 
 import { Color } from '@tiptap/extension-color';
 import { Link } from '@tiptap/extension-link';
-import { useEffect, useState, FC, useCallback } from 'react';
+import { FC } from 'react';
 import { EditorContent, useEditor } from '@tiptap/react';
 import TextStyle from '@tiptap/extension-text-style';
 import Placeholder from '@tiptap/extension-placeholder';
 import StarterKit from '@tiptap/starter-kit';
 import ListItem from '@tiptap/extension-list-item';
 import Heading from '@tiptap/extension-heading';
-import { useDebounce } from '~/libs/useDebounce';
 
 type Props = {
   body?: string;
   placeholder: string;
-  onChange: (body: string) => Promise<void>;
+  onChange: (body: string) => void;
 };
 
 export const Editor: FC<Props> = ({ body, placeholder, onChange }) => {
-  const [inputText, setInputText] = useState<string>();
-  const debouncedInputText = useDebounce({ value: inputText, delay: 200 });
-
-  const handleEditorChange = useCallback(
-    async (body: string) => {
-      await onChange(body);
-    },
-    [onChange],
-  );
-
-  useEffect(() => {
-    debouncedInputText && handleEditorChange(debouncedInputText);
-  }, [debouncedInputText, handleEditorChange]);
-
   const extensions = [
     Color.configure({ types: [TextStyle.name, ListItem.name] }),
     Link.configure(),
@@ -60,7 +45,7 @@ export const Editor: FC<Props> = ({ body, placeholder, onChange }) => {
     content: body,
     autofocus: 'end',
     onUpdate: ({ editor }) => {
-      setInputText(editor.getHTML());
+      onChange(editor.getHTML());
     },
     editorProps: {
       attributes: {
diff --git a/src/app/_constants/apiUrls.ts b/src/app/_constants/apiUrls.ts
index 23c6b6a..90e791b 100644
--- a/src/app/_constants/apiUrls.ts
+++ b/src/app/_constants/apiUrls.ts
@@ -8,3 +8,6 @@ export const API_OBJECTIVE_ME = () => `/api/objectives/me`;
 
 export const API_OBJECTIVE_ID_NIPPO = (_id: string) => `/api/objectives/${_id}/nippos`;
 export const API_NIPPO_BY_DATE = (slug: string, data: string) => `/api/nippos/by-date?date=${data}&slug=${slug}`;
+
+export const API_TASK = () => `/api/tasks`;
+export const API_TASK_ID = (id: string) => `/api/tasks/${id}`;