The number of spontaneous abortions has increased significantly in recent years, and it is a problem for many women and families. This disease is most often seen in two conditions: one is maternal malnutrition and miscarriage; the other is miscarriage due to fetal defects. The former is the most common clinical condition and is the focus of this article. Poor maternal constitution causes the fetus to stop developing in two common ways 1. Some patients have congenital deficiency of kidney yang and internal cold dampness; more often, they eat too much cold food later in life, such as drinking water on an empty stomach, drinking too much water and various drinks and other liquid food, eating too much cold vegetables, fruits and melons, and not enough warm food intake; and less exercise and sweating. The uterus is deficient in cold, cold and damp, and the fetus grows in a poor internal environment and miscarries. 2, liver Qi and blood deficiency is another common factor of spontaneous miscarriage. Many patients usually have a low intake of staple foods, especially protein, fat content-based meat intake is very little; usually often do not eat breakfast; and the spleen and stomach deficiency cold. High-calorie food intake is low and poorly absorbed, plus many patients stay up late for a long time, the liver’s ability to synthesize protein, fat and glucose is greatly reduced, resulting in very low body heat. The fetus does not get sufficient nutrition, poor development and miscarriage.