Abstract: Objective：To understand the basic health status and problems of physical disease，mental health，sexual repression of those migrant workers who work in the construction system of Dalian. Methods：Totally， 17 763 subjects were included. The medical staff did physical examination for migrant workers，and interviewed them one on one using the structured questionnaire. Results：The respondents were dominantly aged 20-49 years， 13 942/ 17 763 （83%）. The average age was 35.88 years， with the range of 16-76 years. The educational level was mainly junior high school， 11 254/17 763 （67%）， while 2688 respondents （16%） had only primary education. 20% respondents had digestive diseases， while 26% had hypertension. With the Valid Questionnaires of mental health， the positive rate was 18.4% among those respondents who met the SCL-90 screening criteria. Conclusions：We should be cared for the physical and mental health of migrant workers. Here we suggested： ①To encourage the publicity, education and promotion of health;②To promote the consultation services on the mental health and reproductive health； ③To provide of the so-called apartment for migrant workers， the lounge in construction site for those visiting relatives， and the provisional room for those migrant couples.

Key words: Rural population, Residential mobility, Workplace, Cities, Reproductive health services, Mental health, Questionnaires