> ## Documentation Index
> Fetch the complete documentation index at: https://ikun.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 递归分块

递归分块是一种通过递归地应用分块策略来将文档拆分成更小块的方法。当你希望处理大型文档的更小、更易于管理的部分时，此方法非常有用。

```python theme={null}
from agno.agent import Agent
from agno.document.chunking.recursive import RecursiveChunking
from agno.knowledge.pdf_url import PDFUrlKnowledgeBase
from agno.vectordb.pgvector import PgVector

db_url = "postgresql+psycopg://ai:ai@localhost:5532/ai"

knowledge_base = PDFUrlKnowledgeBase(
    urls=["https://agno-public.s3.amazonaws.com/recipes/ThaiRecipes.pdf"],
    vector_db=PgVector(table_name="recipes_recursive_chunking", db_url=db_url),
    chunking_strategy=RecursiveChunking(),
)
knowledge_base.load(recreate=False)  # 首次运行后注释此行

agent = Agent(
    knowledge_base=knowledge_base,
    search_knowledge=True,
)

agent.print_response("如何制作泰式咖喱？", markdown=True)

```

## 递归分块参数

<Snippet file="chunking-recursive.mdx" />