Abstract: Objective:To investigate the social network status and impacts caused by social relation in quartz sand enterprise workers.Methods:One hundred and ninety quartz sand enterprise workers from four villages and towns of Fengyang county were surveyed by questionnaire,their social support conditions were analyzed.Results:More males(82.10%) with low education level from many local workers participated in the questionnaire.The proportions of local worker,medium and small-sized enterprise worker and female worker,who seeked help from family and friend under social support condition were higher than that of floating population,large enterprise worker and male worker(P 0.05 to P 0.01).The cognitive status of occupational disease in local worker,worker with more than junior high school education and large enterprise worker were better than that in migrant worker,worker with less than junior high school education and medium and small-sized enterprise worker(P 0.05 to P 0.01).The proportion of occupational health training and contracting in large enterprise was higher than that in medium and small-sized enterprise(P 0.01).Conclusions:The social network relation of quartz sand enterprise workers mainly come from family and friend,the available support mainly come from the informal social network relation.The formal social network support should be reinforced.