diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index d5b88f4..02fae74 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -5,7 +5,8 @@
       "Skill(writing-plans)",
       "Skill(subagent-driven-development)",
       "Bash(git add *)",
-      "Bash(git commit *)"
+      "Bash(git commit *)",
+      "Bash(python -c \"from app.models import Joke, JokeType, JokeCrowd, AdminUser; print\\('All models imported successfully'\\)\")"
     ]
   }
 }
diff --git a/api/app/__pycache__/__init__.cpython-311.pyc b/api/app/__pycache__/__init__.cpython-311.pyc
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diff --git a/api/app/__pycache__/database.cpython-311.pyc b/api/app/__pycache__/database.cpython-311.pyc
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diff --git a/api/app/models/__pycache__/__init__.cpython-311.pyc b/api/app/models/__pycache__/__init__.cpython-311.pyc
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diff --git a/api/app/models/__pycache__/category.cpython-311.pyc b/api/app/models/__pycache__/category.cpython-311.pyc
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diff --git a/api/app/models/__pycache__/joke.cpython-311.pyc b/api/app/models/__pycache__/joke.cpython-311.pyc
new file mode 100644
index 0000000..cfb5500
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diff --git a/api/app/models/__pycache__/user.cpython-311.pyc b/api/app/models/__pycache__/user.cpython-311.pyc
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diff --git a/api/app/schemas/__init__.py b/api/app/schemas/__init__.py
new file mode 100644
index 0000000..d8df8b0
--- /dev/null
+++ b/api/app/schemas/__init__.py
@@ -0,0 +1,29 @@
+from .auth import LoginRequest, TokenResponse
+from .category import (
+    JokeCrowdCreate,
+    JokeCrowdResponse,
+    JokeTypeCreate,
+    JokeTypeResponse,
+)
+from .joke import (
+    JokeCreate,
+    JokeResponse,
+    JokeUpdate,
+    PaginatedJokeResponse,
+)
+
+__all__ = [
+    "JokeBase",
+    "JokeCreate",
+    "JokeUpdate",
+    "JokeResponse",
+    "PaginatedJokeResponse",
+    "JokeTypeBase",
+    "JokeTypeCreate",
+    "JokeTypeResponse",
+    "JokeCrowdBase",
+    "JokeCrowdCreate",
+    "JokeCrowdResponse",
+    "LoginRequest",
+    "TokenResponse",
+]
\ No newline at end of file
diff --git a/api/app/schemas/auth.py b/api/app/schemas/auth.py
new file mode 100644
index 0000000..68e3aaf
--- /dev/null
+++ b/api/app/schemas/auth.py
@@ -0,0 +1,11 @@
+from pydantic import BaseModel
+
+
+class LoginRequest(BaseModel):
+    username: str
+    password: str
+
+
+class TokenResponse(BaseModel):
+    access_token: str
+    token_type: str = "bearer"
\ No newline at end of file
diff --git a/api/app/schemas/category.py b/api/app/schemas/category.py
new file mode 100644
index 0000000..d62e7ec
--- /dev/null
+++ b/api/app/schemas/category.py
@@ -0,0 +1,35 @@
+from pydantic import BaseModel
+
+
+class JokeTypeBase(BaseModel):
+    name: str
+    icon: str | None = None
+    sort_order: int = 0
+
+
+class JokeTypeCreate(JokeTypeBase):
+    pass
+
+
+class JokeTypeResponse(JokeTypeBase):
+    id: int
+
+    class Config:
+        from_attributes = True
+
+
+class JokeCrowdBase(BaseModel):
+    name: str
+    icon: str | None = None
+    sort_order: int = 0
+
+
+class JokeCrowdCreate(JokeCrowdBase):
+    pass
+
+
+class JokeCrowdResponse(JokeCrowdBase):
+    id: int
+
+    class Config:
+        from_attributes = True
\ No newline at end of file
diff --git a/api/app/schemas/joke.py b/api/app/schemas/joke.py
new file mode 100644
index 0000000..cdf6a97
--- /dev/null
+++ b/api/app/schemas/joke.py
@@ -0,0 +1,43 @@
+from datetime import datetime
+
+from pydantic import BaseModel
+
+
+class JokeBase(BaseModel):
+    title: str
+    content: str
+    type_id: int | None = None
+    crowd_id: int | None = None
+
+
+class JokeCreate(JokeBase):
+    pass
+
+
+class JokeUpdate(BaseModel):
+    title: str | None = None
+    content: str | None = None
+    type_id: int | None = None
+    crowd_id: int | None = None
+    status: str | None = None
+
+
+class JokeResponse(JokeBase):
+    id: int
+    status: str
+    view_count: int
+    like_count: int
+    created_at: datetime
+    updated_at: datetime
+    type_name: str | None = None
+    crowd_name: str | None = None
+
+    class Config:
+        from_attributes = True
+
+
+class PaginatedJokeResponse(BaseModel):
+    items: list[JokeResponse]
+    total: int
+    page: int
+    page_size: int
\ No newline at end of file