|The pain and joy of life often comes from interpersonal relationships. The conflict is painfully, but harmony is joyful. How to make people stay in harmony relationship and avoid the endanger of life from the conflict, it becomes the focal point of Mohist school. Mohist proposed ＂righteousness (yi )＂ be the best solution of resolve the interpersonal conflict. ＂Righteousness＂ is not only ＂the universal love ( jian ai )＂, but also is ＂promotes everyone's benefit and abolishes everyone's harm＂. Mohist believe ＂righteousness＂ can not only handle ＂life＂ issues and also applicable to deal the issues of ＂death＂. Mohist consider the ＂righteousness＂ is coming from ＂God＂. ＂God＂ not only created everything for human, also hopes that people can love each other, support each other, cooperate a harmonious human society. Therefore, ＂righteousness＂ is ＂God's will＂. Due to God's ＂love＂, man owns everything in the world, so he should take ＂God's will＂ as his life mission to do ＂righteousness＂ in the human world. Mohist advocate the insistence of ＂righteousness＂ is not just in daily life, when someone needs you to sacrifice yourself in order to save his life or interest, then you should dare to self-devotion, and dare to die. No needs fear ＂Death＂, if you can die for ＂righteousness＂, your death is worthy. ＂Death＂ will not make you disappear, but transform into ＂ghost＂, and you still can back to the life world, to complete the unfinished wish. Mohist emphasis on practicality in the theory, therefore this article is based on ＂how people face their own life and death＂ as the main axle, and also related to ＂how to face other people's life and death＂, by this construction, I will analysis the Mohist philosophy of life and death and its practical application.