Preparation method and application of injectable composite gel containing modified citrus pectin

The invention relates to a preparation method and application of injectable composite gel containing modified citrus pectin. The injectable composite gel containing the modified citrus pectin is prepared by taking an injectable gel high polymer material or a derivative thereof and the modified citrus pectin (MCP) which are widely applied clinically as raw materials and mixing a prepared high polymer material gel solution and a prepared modified citrus pectin solution in a blending manner; by adjusting the concentration of the MCP in the gel and the types, composition and concentration of injectable gel polymer materials and derivatives thereof, the release speed of the MCP is regulated and controlled, and the local concentration of the MCP is maintained. The composite gel has good biocompatibility and injectability, can be applied to local diseased tissues in an injection mode, and is good in clinical applicability; the preparation method has a wide application prospect in the aspects of regeneration and repa