In the 19th and early 20th centuries,there were two major debates on tariffs and trade in Britain,both of which revolved around the issue of trade protection and free trade.In the debate,both sides held their own views.The side that held the view of trade protection believed that the implementa-tion of trade protection and tariff barriers in Britain would help to protect the country's economy from for-eign economic intrusion and thus help to promote the development of the country's economy;the side that advocated free trade believed that,with the industrial revolution in Britain,Britain's demand for interna-tional commodity markets and cheap raw materials became more and more urgent,and that the implemen-tation of free trade and the reduction or even elimination of tariff barriers could better promote the devel-opment of the British economy and its international status.Both arguments ended with the victory of free trade,which shows that the choice of trade and tariff policy of a country is closely related to its domestic and international situation,national interest groups,political parties and public opinion.