Applied psychology is an important branch of psychology which is developing rapidly. Because of people's needs in work and life, the related research fields of various topics have formed the discipline of psychology. Applied psychology studies the application of the basic principles of psychology in various practical fields, including industry, engineering, organization and management, market consumption, school education, social life, medical care, sports, military affairs, justice, environment and other fields. With the rapid development of economy, science and technology, society and culture, the prospect of applied psychology is more and more broad.