Abstract: As an important tool for modern agricultural production, the reliability of agricultural machinery products is directly related to the quality and output efficiency of agricultural production implementation, although China′s agricultural mechanization production capacity has been rapidly improved in recent years, but the reliability issues that cannot be ignored in the process of equipment application. Based on this, in order to improve the reliability of agricultural machinery, the key factors affecting the reliability of agricultural machinery were analyzed from the aspects of design, manufacturing, use, and maintenance, and a feasible ways to improve the reliability of agricultural machinery was proposed, so as to optimize the implementation quality of agricultural machinery urbanization production.