Mild protein deficiency in pregnant women has no obvious symptoms, while severe protein deficiency is mainly characterized by edema and wasting. Mild protein deficiency in pregnant women is characterized by low albumin, globulin and total protein in blood tests without obvious symptoms. Severe protein deficiency in pregnant women can cause hypoproteinemia, resulting in edema of the face, feet and the whole body, and in severe cases, it can lead to the generation of ascites. And when there is a serious lack of protein, the metabolism of cells slows down, affecting the structure and function of organs and tissues of pregnant women as well as the growth and development of the fetus, which is mainly manifested in the wasting of pregnant women and even weight loss. Pay attention to a balanced diet during pregnancy, appropriate supplementation of protein, if a serious lack of protein, should go to the hospital under the guidance of the doctor, for standardized treatment.