The Diamond Sutra, revealing the Bodhisattva path of Mahayana Buddhism, describes and teaches the highest level of life practice. It also directs the numerous sentient beings to obtain the ultimate liberation by great compassion and wisdom of prajna-paramita. There are four elements of life practice in the Diamond Sutra, comparing to Hinayana Buddhist： 1. Broaden the mind ground：It is to expand salvation scope from oneself to all sentient beings. The ultimate purpose is to create the pure land owned by all sentiments of ten dharma realms. 2. Pro-activity of mind：Transforming the passive supra-mundane-mind to active mind of saving all sentiments is to develop the Bodhicitta which is expounded in the Diamond Sutra. In this thesis, it is written as a self-awakening stage in the life practice. That is, to develop the bodhi-mind. 3. Salvation tools：A bodhisattva should have several tools to save the sentient beings. What the sentient beings need is prajna or great wisdom. There are three types of prajna, words, contemplation and reality. In this thesis, it is described as a stage of searching for wisdom. 4. Complete practice of salvation：It is tough and difficult to save the sentient beings. However, if there is prajna wisdom as a leader, the six perfections will be complete and successful. The life practice will become easier. In this thesis, it is a stage of putting into practice. The key success factor of life practice is whether the practitioner can realize the prajna wisdom, especially the truth of Arising-Emptiness. Once this subtle concept can be understood, it is not hard to open the gate of the Diamond Sutra. Furthermore, all the sentient beings can be saved and Buddhahood can be obtained. This is exactly what the Diamond Sutra demonstrates to all of us.
