Abstract: ObjectiveTo examine the status and influencing factors of physical activity(PA)among working pregnant women in Minhang district of Shanghai city.MethodsA questionnaire-based survey was conducted among 2 170 pregnant women residing in Shanghai≥6 months and with stable employment during the pregnancy from May 2011 through May 2012.ResultsThe most prevalent PA among the working pregnant women was transportational PA but only 26.77% of the women participating transportational PA and the ratio of the women taking working PA,transportational PA,and leisure-time PA actively were 4.38%,9.26%,and 1.11%,respectively.The average daily sedentary time of the women was about 7 hours.Among the women,age was positively associated with the participation of leisure-time moderate physical activity(MPA),while negatively with that of working MPA;the participation of transportational PA was positively associated with age,but negatively with gestational weeks and family economic level;and the women being primipara were more likely to take transportational PA,but not MPA during working.ConclusionThe overall PA was at a low level,with a relatively higher level of transportational PA,and PA during pregnancy was associated with age,gestational weeks,family economic level,and whether being primipara among the working pregnant women in Shanghai.