Abstract:To optimize the operation mechanism of agricultural technology extension plays an important role in promoting the poverty alleviation in poor areas.But the operation mechanism of public agricultural technology extension in ethnic poverty regions of Sichuan faces many defects:lack of communication,responsibility confusion,staffing unreasonable,as well as lack of incentive and performance appraisal system.This is due to the system design and the restrictive factors of development.Therefore,the the operation mechanism of agricultural technology extension should be optimized from setting up a work leading group about agricultural technology extension, broadening the channel of the staffing,building a "trinity" of incentive and evaluation system.And should accelerate the pace of reforms and increase capital investment to ensure the work of agricultural technology extension smoothly.