Agricultural service outsourcing market is not a static market， but has different states of development， stability and extinction. This article distinguishes the various stages of the development of the agricultural service outsourcing market and uses evolutionary dynamics and economic game theory to construct an evolutionary model to analyze its basic characteristics and influencing factors of each stage. It is found that the degree of stability， equilibrium point and influencing factors varies accordingly at different stages of the development of the agricultural service outsourcing market， and should be treated differently. Agricultural service outsourcing market can be cultivated through government subsidies， or it may be a natural product of industrialization and urbanization to a certain extent. The key lies in how to induce both suppliers to enter the market at the same time. This article draws conclusions as follows：1） in areas where the service outsourcing market is relatively underdeveloped， subsidies or infrastructure construction should be enhanced to reduce service provider entry costs；2） In regions where the service outsourcing market is well developed， external capital should be encouraged to employed there or used cross-regionally to expand the market scale；3） It is not suitable to develop the agricultural outsourcing service market in areas with low labor productivity or non-agricultural employment wages.