打工民夫是日本帝国主义针对中国的——主要来自华北农村的土建工人的称谓。本文分析了 1931— 1937年间 ,满铁对中国土建工人的奴役、压迫。文中介绍了中国土建工人受满铁奴役的一般状况 ,分析了日帝和满铁企图限制而又不得不募用中国华北土建工人的原因 ;侧重分析了满铁对中国土建工人的奴役、招募、管理方式和残酷剥削等状况 Migrant workers are the names of Japanese imperialists aimed at China, mainly civilians in rural North China. This article analyzes Manchurian slavery and oppression of Chinese civil workers from 1931 to 1937. This paper introduces the general situation of Chinese civil workers being enslaved by the Manchu government and analyzes the reasons why the Japanese and Manchurians attempt to restrict but they have to recruit civilians in North China. The paper analyzes the Manchurian slavery, recruitment, Management methods and cruel exploitation and other conditions