The thesis takes a theoretical approach to the education on life mission, it brings forward three principles concerned, namely, the Human Right Principle, focusing on survival and development; the Education Principle, focusing on adaptation and excellence; the Evolution Principle, focusing on inherence and innovation. Nine cases applied the three principles are discussed and analyzed. The author holds that life education should permeate naturally in school education, while all courses and activities in school should apply the three principles in daily life.