嘉祐茶法是与宋代东南茶法由交引法向以引榷茶制的转变趋势不相符合的插曲。它的实行是因为从太宗末年以来交引法长期受到沿边入中侵害 ,虚估严重。庆历议和以后边费减少 ,宋政府实行通商以救虚估之弊。嘉通商法放去政府专卖 ,仅征收茶租和茶税 ,但对茶利及商人营销等的管理仍较一般商品严格。嘉茶法也有诸多弊端 ,特别是不能增加政府茶利 ,它仍然延续了四十年 ,主要是宋政府对此前严重的虚估之弊心有余悸 ,未寻求到更好的办法以前 ,不敢贸然变更。但它从根本上不符合统治者需要 ,最终又被禁榷法取代 Jiayou Tea Law is an episode that does not accord with the changing tendency of the southeast tea law in Song Dynasty from the cross-reference method to the introduction of tea system. Its implementation is because it has been infringing on the border for a long time since its submission to Taizong in the last years of the Taizong rebellion, with a serious false estimation. After the celebration of the calendar and the reduction of edge charges, the Song government to implement trade-remedy fraud. Ka-shing Tong commercial law put government monopoly, only levied tea rent and tea tax, but the management of tea sales and merchant marketing is still more stringent than the average commodity. There are many drawbacks to the Jia’e method. In particular, it can not increase the government’s profitability. It still lasted for 40 years. The main reason is that the Song government longed for fear of a serious false estimation before. However, it did not dare to rush ahead without seeking a better solution change. However, it fundamentally did not meet the needs of the rulers and was ultimately replaced by the law of ban