全国解放以后，根据中央的要求，上海从1951年上半年开始，分别在国营工厂企业、私营工厂企业和搬运、建筑、码头等8个方面的行业中，有计划、有步骤地开展了民主改革运动，以纯洁工人队伍，加强内部团结，充分发挥工人阶级在工厂、企业中的主人翁作用，进一步调动他们的生产积 After the liberation of the country, according to the requirements of the Central Government, from the first half of 1951, Shanghai carried out democratic reforms in a planned and systematic manner in eight industries including state-owned factory enterprises, private factory enterprises, and transportation, construction and wharf. Campaign to purify the ranks of workers, strengthen internal solidarity, give full play to the role of the working class in factories and enterprises, and further mobilize their production