Contemporary psychology was not only divided in research object, but also on the orientation theory and methodology, so it is difficult to use a kind of logical criteria to classify the various theories. Western psychology often used the classification criteria of theory with time, This classification criteria of theory can help us to handle the development of the theory of sequence, but e are often unable to catch the main characteristics of the theories, due to it difficult to comparison. In recent years, western psychologists put forward on a theoretical classification standard of psychology based on the causality. They think that psychology theory can be divided into organocentrism, envirocentrism, sociocentrism and noncentrism, this classification standard can make us understand the causality between theories, but often easily confused some relevant theories (such as ecological psychology and environmental psychology). This paper proposes a theoretical classification standard of psychology based on the content directivity, including the orientation for consciousness, behavior, mechanisms, and meaning. This theoretical classification standard pay more attention is not the time sequence, also is not causality, but theory content directivity. In causality classification system, the most problems are that the multidirectional attribution and no attribution, due to definition is not clear of causality. This theoretical classification standard can make up for insufficient of other two kinds of classification criteria.