Civil behavior is an essential element of Civil Law. Civil behavior is a link to link the three Civil Law theory：subjects of rights, property and claims, is a bridge to transform objective rights and obligations into subjective rights and obligations, is the transformation law system interface to the real law. Civil juristic act is the product of the commodity economy, is abstraction and generalization that people adapt to the development of the standardize of commodity economy on the complicated requirements of specific commodity production and commodity exchange behavior. It can be said that both the implementation of each basic spirit of civil law and the establishment of the socialist market economic order what would depend on the role of civil juristic act that play; Therefore, there is great theoretical and practical significance in studying the civil juristic act. In this paper, the general theories of civil juristic act were sorted and elaborated, which focuses on its origin, definition, classification, form, establishment, validity, private value, quasi civil juristic act and so on. Civil behavior is an essential element of Civil Law. Civil behavior is a link to link the three Civil Law theory：subjects of rights, property and claims, is a bridge to transform objective rights and obligations into subjective rights and obligations, is the transformation law system interface to the real law. Civil juristic act is the product of the commodity economy, is abstraction and generalization that people adapt to the development of the standardize of commodity economy on the complicated requirements of specific commodity production and commodity exchange behavior. It can be said that both the implementation of each basic spirit of civil law and the establishment of the socialist market economic order what would depend on the role of civil juristic act that play; Therefore, there is great theoretical and practical significance in studying the civil juristic act. In this paper, the general theories of civil juristic act were sorted and elaborated, which focuses on its origin, definition, classification, form, establishment, validity, private value, quasi civil juristic act and so on.