Abstract: The popularization and application of the soil test formula fertilization technology is of great practical significance to the realization of reducing the quantity and increasing the efficiency of chemical fertilizer and the sustainable development of agriculture in China. Based on 755 farmers' micro-survey data in hubei province in 2018 and from the perspective of technology promotion and subdivision, this paper analyzed the influence of service supply on the adoption of rice farmers′ soil testing and formula fertilization technology, and further discussed the mechanism of action between the two. It was found that: first, the rice farmers in the sample area had low adoption rates, only 25.7%, and the service supply of all technical promotion links was limited, less than half. Secondly, the service supply of soil measurement, supply and fertilization guidance had a significant positive impact on the adoption of rice farmers′ technology. Third, the service supply improves the probability of adoption of soil testing and formula fertilization technology for rice farmers by improving the ability of distinguishing fertilizer, enhancing the cognition of scientific fertilization and the importance of green production. In this regard, it is suggested to increase the service supply of each segment of agricultural technology promotion, strengthen the cooperation between the government and enterprises, and speed up the transformation of agricultural technology promotion concept, so as to finally realize the popularization and application of technology.