Abstract: Since the Reform and Opening-up,the Southwest Minority Region entered new period of agriculture extroversion,and its historical trend of agricultural extroversion generally presents "from point to line""from line to surface"and"from surface to body". Through literature review and investigation analysis,four historical evolution stages of agricultural extroversion in the Southwest Minority Region are summarized:the stage of initial exploration,multi-point flowering,in-depth development and reform promotion. So on the basis of the explaining on the main contents and characteristics of each stage,the basic enlightenment of the agricultural extroversion evolution in the Southwest Minority Region are summarized:guidance and incentives of policy,driving and radiation of enterprise,response and participation of farmers,leverage and application of technology.