在小农业和家庭手工业紧密结合的自然经济占统治地位的封建社会里,制盐业是关系到国计民生的手工业重要行业之一;而运销食盐又是商业的重要门类,是豪商富贾竟相涉足的领域.食盐是人民生活不可缺少的必须品,其销售量大,转输渠道复杂,供求关系难以平衡,同时盐税也是国家中央和地方政府财政收入的重要源泉.因此,中国历代统治阶级都十分重视对制盐、运盐、售盐的控制和管理. In the feudal society dominated by the natural economy in which small-scale farming and handicrafts are closely integrated, the salt-making industry is one of the important handicrafts related to national economy and the people’s livelihood. And the marketing and sale of salt is another important category of commerce. Of salt water is an indispensable necessity for people’s life, its sales volume is large, the transmission channels are complex, the balance between supply and demand is difficult to balance, and salt tax is also an important source of fiscal revenue for the state and local governments.Therefore, all the ruling classes in China Attaches great importance to the salt, salt, salt control and management.