Abstract: To study the impact of socialized agricultural machinery services on farmers’ enthusiasm for growing grain is of great practical significance for improving the level of socialized agricultural machinery services in my country, mobilizing farmers’ enthusiasm for growing grain, and ensuring national food security. Based on the panel data of 30 provinces in China from 2004 to 2019, constructing a two-way fixed effect model to analyze the effect of agricultural machinery socialization services on farmers’ enthusiasm for growing grain. Research indicates, socialized agricultural machinery services have a significant positive impact on farmers’ enthusiasm for growing grain, and it is significant at the 1% level. In terms of regional distribution, agricultural machinery socialized services in main grain production areas, main grain sales areas, and grain production and sales balance areas There is still a positive impact on farmers’ enthusiasm for growing grain, and they are significant at the levels of 1%, 10%, and 5%. Socialized agricultural machinery services can increase production and income, save costs and increase efficiency through the integration of resources, and can effectively enhance farmers’ enthusiasm for growing grain. However, it is limited by resource endowment and other conditions, the impact of socialized agricultural machinery services on farmers’ enthusiasm for growing grain has regional differences. The social service level of agricultural machinery is limited, and there is still room for improvement.