diff --git a/apps/application/models/application.py b/apps/application/models/application.py
index bfa431f8f..a5a71328c 100644
--- a/apps/application/models/application.py
+++ b/apps/application/models/application.py
@@ -6,3 +6,103 @@
     @date：2025/5/7 15:29
     @desc:
 """
+import uuid_utils.compat as uuid
+from django.db import models
+from mptt.fields import TreeForeignKey
+from mptt.models import MPTTModel
+
+from common.mixins.app_model_mixin import AppModelMixin
+from models_provider.models import Model
+from users.models import User
+
+
+class ApplicationFolder(MPTTModel, AppModelMixin):
+    id = models.CharField(primary_key=True, max_length=64, editable=False, verbose_name="主键id")
+    name = models.CharField(max_length=64, verbose_name="文件夹名称")
+    desc = models.CharField(max_length=200, null=True, blank=True, verbose_name="描述")
+    user = models.ForeignKey(User, on_delete=models.DO_NOTHING, verbose_name="用户id")
+    workspace_id = models.CharField(max_length=64, verbose_name="工作空间id", default="default", db_index=True)
+    parent = TreeForeignKey('self', on_delete=models.DO_NOTHING, null=True, blank=True, related_name='children')
+
+    class Meta:
+        db_table = "application_folder"
+
+    class MPTTMeta:
+        order_insertion_by = ['name']
+
+
+class ApplicationTypeChoices(models.TextChoices):
+    """订单类型"""
+    SIMPLE = 'SIMPLE', '简易'
+    WORK_FLOW = 'WORK_FLOW', '工作流'
+
+
+def get_dataset_setting_dict():
+    return {'top_n': 3, 'similarity': 0.6, 'max_paragraph_char_number': 5000, 'search_mode': 'embedding',
+            'no_references_setting': {
+                'status': 'ai_questioning',
+                'value': '{question}'
+            }}
+
+
+def get_model_setting_dict():
+    return {
+        'prompt': Application.get_default_model_prompt(),
+        'no_references_prompt': '{question}',
+        'reasoning_content_start': '<think>',
+        'reasoning_content_end': '</think>',
+        'reasoning_content_enable': False,
+    }
+
+
+class Application(AppModelMixin):
+    id = models.UUIDField(primary_key=True, max_length=128, default=uuid.uuid7, editable=False, verbose_name="主键id")
+    workspace_id = models.CharField(max_length=64, verbose_name="工作空间id", default="default", db_index=True)
+    folder = models.ForeignKey(ApplicationFolder, on_delete=models.DO_NOTHING, verbose_name="文件夹id", default='root')
+    name = models.CharField(max_length=128, verbose_name="应用名称")
+    desc = models.CharField(max_length=512, verbose_name="引用描述", default="")
+    prologue = models.CharField(max_length=40960, verbose_name="开场白", default="")
+    dialogue_number = models.IntegerField(default=0, verbose_name="会话数量")
+    user = models.ForeignKey(User, on_delete=models.DO_NOTHING)
+    model = models.ForeignKey(Model, on_delete=models.SET_NULL, db_constraint=False, blank=True, null=True)
+    dataset_setting = models.JSONField(verbose_name="数据集参数设置", default=get_dataset_setting_dict)
+    model_setting = models.JSONField(verbose_name="模型参数相关设置", default=get_model_setting_dict)
+    model_params_setting = models.JSONField(verbose_name="模型参数相关设置", default=dict)
+    tts_model_params_setting = models.JSONField(verbose_name="模型参数相关设置", default=dict)
+    problem_optimization = models.BooleanField(verbose_name="问题优化", default=False)
+    icon = models.CharField(max_length=256, verbose_name="应用icon", default="/ui/favicon.ico")
+    work_flow = models.JSONField(verbose_name="工作流数据", default=dict)
+    type = models.CharField(verbose_name="应用类型", choices=ApplicationTypeChoices.choices,
+                            default=ApplicationTypeChoices.SIMPLE, max_length=256)
+    problem_optimization_prompt = models.CharField(verbose_name="问题优化提示词", max_length=102400, blank=True,
+                                                   null=True,
+                                                   default="()里面是用户问题,根据上下文回答揣测用户问题({question}) 要求: 输出一个补全问题,并且放在<data></data>标签中")
+    tts_model = models.ForeignKey(Model, related_name='tts_model_id', on_delete=models.SET_NULL, db_constraint=False,
+                                  blank=True, null=True)
+    stt_model = models.ForeignKey(Model, related_name='stt_model_id', on_delete=models.SET_NULL, db_constraint=False,
+                                  blank=True, null=True)
+    tts_model_enable = models.BooleanField(verbose_name="语音合成模型是否启用", default=False)
+    stt_model_enable = models.BooleanField(verbose_name="语音识别模型是否启用", default=False)
+    tts_type = models.CharField(verbose_name="语音播放类型", max_length=20, default="BROWSER")
+    tts_autoplay = models.BooleanField(verbose_name="自动播放", default=False)
+    stt_autosend = models.BooleanField(verbose_name="自动发送", default=False)
+    clean_time = models.IntegerField(verbose_name="清理时间", default=180)
+    file_upload_enable = models.BooleanField(verbose_name="文件上传是否启用", default=False)
+    file_upload_setting = models.JSONField(verbose_name="文件上传相关设置", default=dict)
+
+    @staticmethod
+    def get_default_model_prompt():
+        return ('已知信息：'
+                '\n{data}'
+                '\n回答要求：'
+                '\n- 如果你不知道答案或者没有从获取答案，请回答“没有在知识库中查找到相关信息，建议咨询相关技术支持或参考官方文档进行操作”。'
+                '\n- 避免提及你是从<data></data>中获得的知识。'
+                '\n- 请保持答案与<data></data>中描述的一致。'
+                '\n- 请使用markdown 语法优化答案的格式。'
+                '\n- <data></data>中的图片链接、链接地址和脚本语言请完整返回。'
+                '\n- 请使用与问题相同的语言来回答。'
+                '\n问题：'
+                '\n{question}')
+
+    class Meta:
+        db_table = "application"
diff --git a/apps/folders/serializers/folder.py b/apps/folders/serializers/folder.py
index b625774c8..366b7e8c3 100644
--- a/apps/folders/serializers/folder.py
+++ b/apps/folders/serializers/folder.py
@@ -6,6 +6,7 @@ from django.db.models import QuerySet, Q
 from django.utils.translation import gettext_lazy as _
 from rest_framework import serializers
 
+from application.models.application import Application, ApplicationFolder
 from common.constants.permission_constants import Group
 from folders.api.folder import FolderCreateRequest
 from knowledge.models import KnowledgeFolder, Knowledge
@@ -18,8 +19,7 @@ def get_source_type(source):
     if source == Group.TOOL.name:
         return Tool
     elif source == Group.APPLICATION.name:
-        # todo app folder
-        return None
+        return Application
     elif source == Group.KNOWLEDGE.name:
         return Knowledge
     else:
@@ -30,8 +30,7 @@ def get_folder_type(source):
     if source == Group.TOOL.name:
         return ToolFolder
     elif source == Group.APPLICATION.name:
-        # todo app folder
-        return None
+        return ApplicationFolder
         # return ApplicationFolder
     elif source == Group.KNOWLEDGE.name:
         return KnowledgeFolder