All successful people do need the power of perseverance, but the definition of diligence in Buddhism has a deeper and broader connotation than perseverance in the world. Diligence in Buddhism is brave, joyful, and continuous desire for good Dharma. The object of diligence must be good Dharma. The purpose of diligence is to liberate life and death or achieve supreme Bodhi. This dissertation mainly focuses on the "" Perfection of Perseverance"" in ""Lamrim Chenmo"", and analyzes the characteristics and types of diligence, as well as the conditions for the establishment of the perfection of perseverance. In the chapter ""Perfection of Perseverance"" in ""Lamrim Chenmo"", it is stated that the perfection of perseverance must have six extraordinary qualities, and that the perfection of perseverance must have a mutually supportive relationship with the six paramitas. The perfection of perseverance in Buddhism has a special specification. From the study of the related the perfection of perseverance, it is found that most of the literature discusses the perfection of perseverance that is attached to the practice of a certain good Dharma, and rarely takes the perfection of perseverance as the protagonist to study how to diligently. This dissertation attempts to explore the thought and practice approach based on the chapter ""Perfection of Perseverance"" in ""Lamrim Chenmo"". The "" Perfection of Perseverance"" in ""Lamrim Chenmo"" is divided into five categories: the self-nature of diligence, the means of diligent cultivation, the difference of diligence, how to cultivate in the right way, and other meanings. After research and analysis, it is found that the ""Perfection of Perseverance"" in ""Lamrim Chenmo"" constitutes the practice method with the main focus on the Diligence Paramita, which is a discussion of the practice stages of the Diligent Paramita. In the content of these five judgments, there are the steps of diligent practice of Paramita. This thesis finds that there are four steps in the practice of paramita that can lead to diligence: first, to understand what the characteristics of diligence are; second, how to induce the desire to practice diligence; The method of treating illicit products; Fourth, strive to gather and cultivate the perfect condition of the perfect paramita. The "" Perfection of Perseverance"" in ""Lamrim Chenmo"" provides clear and detailed principles of practice and the steps of practice, which can help scholars to easily understand the connotations of the principles and practice them. Those who wish to practice can be aware of their own state in order to practice.