Abstract: Physical activity during pregnancy helps not only improve women's health, but also promote the growth of their fetuses. While all the other countries issued a series of physical activity guidelines during pregnancy, China lacks the relevant research, without physical activity guidelines for pregnant women as well. The guidelines for physical activity during pregnancy issued by developed countries and social organizations in recent years hence are sorted out, trying to provide scientific guidance for pregnant women in China.It is found that the American College of Obstetrics and Gynecology(ACOG), the United States Department of Health (USDHHS), Canada, the United Kingdom, and the International Olympic Committee(IOC) have all put forward detailed recommendations on physical activity for pregnant women, which included the contraindications and risks of physical exercise, its frequency, duration, exercise intensity and types, and the emphasis on the prevention and protection measures of physical exercise.The conclusions are therefore drawn as follows: good exercise awareness is the prerequisite for pregnant women to exercise during pregnancy, systematic medical examination the basis, scientific exercise method the key and safe prevention and protection measures the guarantee.