The crotch pain on both sides of pregnancy may be caused by walking for a long time, or standing and sitting all the time, it is recommended that pregnant women avoid standing and sitting for a long time, and regular work and rest. In addition, lack of calcium, lack of vitamin D, trauma and other factors can also cause crotch pain on both sides of the pregnant woman. 1, lack of calcium: after 16 weeks of pregnancy, the fetus’s demand for calcium increased significantly, if the pregnant woman can not supplement calcium in time, there will be calcium deficiency, osteoporosis, the common manifestation is crotch pain, pubic bone joint pain, wrist or lower extremity pain, etc.. It is recommended that pregnant women go to the hospital on an empty stomach for a serum trace element test, if the serum calcium ion is found to be lower, it is clear that there is a lack of calcium, to follow the doctor’s instructions to supplement calcium tablets, oral calcium carbonate. At the same time in calcium supplementation is recommended that pregnant women drink some dairy products, because dairy products contain more calcium, but also to increase protein-rich foods, improve their own resistance; 2, lack of vitamin D: due to the obvious reduction of vitamin D may also cause crotch pain on both sides of the pregnant women, so it should also be supplemented with vitamin D. Vitamin D is a fat-soluble vitamins, can not be supplemented with too much supplementation of vitamin D, supplementation of vitamin D in the 3-4 weeks after the need for Review the serum vitamin D level; 3, trauma: pregnancy crotch pain on both sides, pay attention to whether the pregnant woman has trauma, trauma may also cause crotch pain, it is recommended to go to the orthopedic consultation. But try not to do radiography during pregnancy, may have an impact on the development of the fetus; 4, lumbar disc herniation: some pregnant women have lumbar disc herniation, during pregnancy may also cause crotch pain, or double lower limb pain, it is recommended that the pregnant woman can be appropriate massage, can be a certain degree of relief of the symptoms; 5, skin diseases: pregnant women crotch pain, pay attention to the surface of the skin whether the pimple and other changes To go to the dermatology department in a timely manner; 6, the role of relaxin: pregnant women on both sides of the hip pain, not necessarily caused by disease, but also may be pregnant after the body secretes relaxin, resulting in the ligamentous tissue of the bone and joints become lax, bone and joint mobility to further increase the reaction to the hip joints, that is, the performance of the hip bone pain.