Soreness in the calves of pregnant women unable to sleep is usually caused by weight gain compression, calcium deficiency or lower extremity circulation disorders, etc., depending on the cause of the symptoms. The rapid growth and development of the fetus during pregnancy and the significant increase in the weight of the pregnant woman lead to the center of gravity of the uterus forward compression of the sciatic nerve caused by pain, so that pregnant women can not sleep. In this case, pregnant women are advised to relieve the pain by massaging the calves. Calcium deficiency in pregnant women will be manifested as cramps and muscle aches and pains. Pregnant women are advised to consume more calcium-rich foods such as milk, soy products, more sun exposure to replenish the calcium content and calcium supplements. If pregnant women stand or sit for a long time in daily life will lead to lower limb blood circulation slow down, varicose veins or lower limb venous thrombosis may occur, may appear calf soreness and swelling, it is recommended to exclude lower limb venous thrombosis, appropriate exercise. It is recommended to consult a doctor in time if there is any discomfort during pregnancy, pay attention to rest and avoid exertion.