Yoga practice for pregnant women mainly serves to soothe the fetus, provide oxygen to the fetus, as well as promote nutrient absorption, correct fetal position and promote fetal growth and development. In addition, for pregnant women themselves, practicing yoga can overcome pregnancy reactions and relieve various physiological disorders. Moreover, it can control weight, prevent fatness, enhance physical fitness, improve childbirth strength and reduce labor pain. In addition, it can also enhance the pleasure level, make the mood optimistic and cheerful, and improve the chance of smooth delivery and reduce the risk of delivery. I. Pregnant women yoga months to start Pregnant women during pregnancy exercise, according to the stage of pregnancy and the development of the fetus to choose, as follows: 1, early pregnancy (1-3 months): at this time the fetal position is unstable, should not practice yoga and other sports, recommended to recuperate mainly; 2, mid-pregnancy (4-6 months): at this time the fetal bed has been stable, pregnant women can practice yoga in moderation, but should still remember not to run, jump and other easy to 3, late pregnancy (7-9 months): at this time the fetus development tends to be mature, you can practice yoga breathing and simple yoga movements, in order to facilitate the smooth delivery. Second, pregnant women practice yoga contraindicated movements pregnant women practice yoga although there are more advantages, but the following yoga movements pregnant women can not do: 1, back bending movements: the development of the spine of pregnant women is not conducive; 2, abdominal landing class movements: abdominal exercise eclipse abdominal pressure, and even cause the rectus abdominis muscle cracking, so that the lower back support worse; 3, deep twisting or inversion: may make pregnant women fetal position is not correct, but also compression of the chest cavity leads to body discomfort, etc. Pregnant women practicing yoga to avoid adverse effects on the fetus, need to pay attention to the following aspects: 1, control the number and intensity of yoga training; 2, control the time of yoga training, should not exceed half an hour; 3, choose a suitable type of yoga and professional yoga instructor; 4, if there is any discomfort, should immediately stop, timely medical care, to the safety of pregnant women and fetus.