By on-the-spot investigation of the partial impoverished country in Gansu Province, This paper proved necessity of developing the small region agri-tech promotion household in the impoverished area ;discussed function of the small region agri-tech promotion household, namelyTechnical region innovation、technical demonstration,、technical promotion and information transmission and feedback.; discussed main content of movement mechanism of the small region agri-tech promotion household, namely:screening suitable practical agricultural technology 、benefit links of the promoted department and the promoted household、sets up the premium fund of the small region agri-tech promotion household、formulates performance appraisal system of the small region agri-tech promotion household、the local authority and the correlation department's policy support and the education training measure、the technical information dissemination and the feedback and so on; finally proven function of the small region agri-tech promotion household in agri-tech promotion in the impoverished area,Namely speeds up agri-tech promotes in the impoverished area、makes up the basic unit agriculture technique to promote personnel's insufficiency、Provides extends the platform for the agricultural technology region compatibility research and Display technology radiation effect and so on。