With the popularization of Internet+ modern agriculture,the mechanism of small farmers’ promotion of organic link efficiency with modern agricultural development is gradually formed by participating in agricultural products e-commerce.This research followed 2744 small-scaled fruit growers from 176 administrative villages in Jiangsu,Hebei and Shandong Provinces during 2014 to 2019.A three-level evaluation system with 13 micro-indicators of four dimensions (development,organization,income space and socialized service) is constructed by entropy-based analytic hierarchy process to reveal the link efficiency between small farmers and modern agricultural development.Propensity Scoring Matching-Difference in Difference Model is built to confirm the treatment effects of agricultural products e-commerce activities on efficiency of the organic linkage.The empirical results show that the comprehensive link efficiency and its 4 secondary indicators increased by year with a slowing down pace.In addition,agricultural products e-commerce promoted small-farmers’ efficiency of organic linkage with Modern Agricultural Development,which has significant impact on organization and socialized service.The impact on development capacity and income growth space needs to be observed for a longer period.