Abstract: Objective This study aimed to elucidate the effects of agricultural socialized service development on intergenerational agricultural succession among small-scale farmers and its underlying mechanisms， so as to provide refere-nces for the renewal of human capital and family operation models in small-scale farming households.Method Based on data from the 2020 Rural Revitalization Survey of China and 2020 China Statistical Yearbook， the effects of the effects of agricultural socialized service development on intergenerational agricultural succession among small-scale farmers were analyzed using a Probit model. An OLS model was established from two perspectives—household agricultural labor input and nonlocal large-scale specialized agricultural households—to explore their mechanisms. The heterogeneous effects of agricultural socialized service development on intergenerational agricultural succession were examined based on parental age and household agricultural machinery endowment.Result （1） Baseline regression analysis indicated that increased agricultural socialized service development significantly inhibited intergenerational agricultural succession among small-scale farmers （P<0.05， the same below）. Moreover， this inhibitory effect remained significant even when replacing the core explanatory variables. （2） Mechanism analysis revealed that enhanced agricultural socialized services effectively reduced labor inputs in sowing and pesticide use for small-scale agricultural households， while also attracting nonlocal large-scale agricultural households， which could decrease the amount of farmland transferred to farmers in the villages. These effects remained significant after adjusting sample size and winsorization. （3） Heterogeneity analysis revealed that enhanced agricultural socialized services significantly inhibited intergenerational succession in agricultural households with an advanced parental age （above 60 years old） or a high level of household agricultural machinery endowment. 【Suggestion】The relationship among agricultural socialized services， new agricultural business entities， and small-scale far-mers should be reexamined， and the endogenous development of small-scale agricultural households should be achieved from the following three aspects： （1） establish and improve the agricultural socialized service system to promote comprehensive expansion of agricultural social services； （2） broaden access to non-agricultural employment information to enhance labor stability in non-agricultural sectors； （3） strengthen interest linkages among small-scale agricultural households and develop collective cooperative economies for the villages.