The real estate intermediary industry is an important part of the real estate industry, which runs through the whole process of economic operation of the real estate industry and provides diversified intermediary services for the production, circulation and consumption of the real estate industry. It has the characteristics of service, liquidity and flexibility.

In the ancient and modern markets of China, brokers who introduce transactions to buyers and sellers and evaluate the quality and price of real estate commodities are called houses. Zhaihang is the predecessor of real estate agency in China, and now it is called real estate agency, real estate supermarket, real estate store and so on. According to historical records, during the Qing Dynasty, houses were mainly distributed in Shanxi, Shaanxi, Hebei, Tianjin and other places. In the old society, people called the brokers engaged in real estate brokerage in real estate companies' Fang Yazi'. Fang Yazi is a person who used to negotiate the sale or lease of real estate in the old house business, and now he is called a real estate agent.