Abstract: Women are at low risk for adverse fetal or maternal events（preeclampsia，gestational diabetes mellitus，premature labor），if they participate in routine physical activity during pregnancy. Benefits from exercise during pregnancy include weight management，therapy for GDM，relief from low back pain，improved sense of well-being and enhanced sleep. Although there are still some arguments about the potential risk of exercise during pregnancy，many countries have published guidelines for exercise during pregnancy and the postpartum period，these guidelines are made for women who do not have any additional risk factors for adverse maternal or perinatal outcome. The benefits and potential risks of exercise during pregnancy and the suitable exercise during pregnancy are reviewed in this article，and also we think an investigation on the exercise during pregnancy of Chinese women should be carried out，and on the basis of that a guideline should be developed as soon as possible.

Key words: Pregn, Exercise, Activities of daily living, Weight gain