Based on the basic theory of brokerage, grasping the law of brokerage activities, synthesizing the legal knowledge, marketing knowledge and various brokerage professional knowledge involved in brokerage activities, with strong pertinence, integrating theory with practice and highlighting practical guidance, it is an authoritative practical series suitable for all kinds of brokerage practitioners to learn theory and master practice, and also an important reference series for all walks of life to understand and learn brokerage business.