经纪人是为买卖双方说合交易而收取佣金的中间商人。经纪人的起源国虽未考证清楚，但在国外，它应最早出现在商业发展程度较高的国家。而在我国，经纪人大约在汉代就已存在。自唐代开始，经纪人被称为“牙人”。宋已有官牙、私牙之分。明代“牙人”还有代官府监督商人纳税的责 Brokers are middlemen who charge commissions for both buyers and sellers. Although the country of origin of the broker has not been verified, it should first appear in countries with a high degree of commercial development abroad. In our country, brokers existed about in the Han Dynasty. Since the Tang Dynasty, brokers have been called “dental people.” Song has official teeth, private teeth of the points. Ming Dynasty “tooth people” there are generations of government officials to supervise the tax liability