Pregnant women lack vitamin D in the following ways: 1, dietotherapy, which can supplement the vitamin D needed by the body through dietary choices, such as eating more fresh fruits and vegetables every day, and reasonably matching fish, shrimp, eggs, milk, lean meat and other foods that can supplement vitamin D in the daily diet. 2, health care therapy, pregnant women who lack vitamin D should increase the daily sun exposure time, go outdoors regularly, and help the body promote the absorption of vitamin D while breathing fresh air. 3, drug treatment, you can take vitamin D directly under the guidance of a doctor, or choose an oral liquid suitable for pregnant women to supplement vitamin D, which can improve the lack of vitamin D, pay attention to nutritional balance in daily life, and regularly check the supplementation of vitamin D and other elements in the hospital to ensure the normal development of the fetus in the abdomen.