A cross-sectional study of health status and the development of their offspring among 3,555 woman workers exposed to a variety of hazardous factors at 14 factories was conducted in 1988 in Dalian. 2,054 woman workers who were not exposed to any kind of the Hazards were used as control group. The relative risk (RR) and the attributive risk (AR) were used to compare the incidence of the study group with that of the control. There are statistically significant excesses of irregular menstruation rate, abortion rate premature and still birth rate in the study group. The rate of congenital malformations of the offsprings of women exposed to benzene is significantly high and so are women working in chemical industry, but it is not significantly different between those exposed to lead and the control group. The incidence of gynecopathy among the study group women consistently is higher than the control group indicating that the hazards in factories can adversely affect the menstruation, reproduction, and the development of their offspring of woman workers.