Life science is a science that studies the process and law of life activities and the interaction between organisms and the environment. Biology has made great progress in the 20th century, and a number of new achievements represented by gene recombination technology indicate that life science research has entered a new era. People can not only understand the essence of life phenomena from the molecular level, but also reveal the secrets of life from a newer height. Although life science has been able to explain many problems of life process after centuries of development, many major key problems related to improving human living environment and their solutions are still far beyond the scope of our modern science and technology! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! The scope of! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !