Abstract:The unclear developmentdirection of human society is a deep reason for that it is difficult to form a uniform ethical standard for human society and artificial intelligence. Through the study of the Internet brain model, AI's IQ evaluation, and the evolution of the brain, this paper proposes that the evolution of population knowledge base is the key for judging the development direction of human society,thereby discussing the standards and norms for the construction of artificial intelligence ethics. Keywords: Direction of Evolution; Population Knowledge Base; Artificial Intelligence Ethics 1. Dilemma for Formation of Human and Artificial Intelligence Ethics Like the cases of intelligence, consciousness, life and universe, it is difficult to give ethics a uniform definition. Generally,ethics refers to the principles and guidelines that should be followed when one deals with the people-to-people and people-to-society relationships, and it is a philosophical reflection on moral phenomena from a conceptual perspective. The ethical impact from the artificial intelligence has become more prominent because of the incompleteness and controversy of ethical issues.