Physiological edema generally occurs during pregnancy, mainly due to water and sodium retention caused by fluctuations in sex hormones, or the enlarged uterus pressing on the inferior vena cava in late pregnancy, resulting in obstruction of blood circulation in the lower limbs, manifesting as lower limb edema, which will generally gradually subside after the birth of the child. Pregnant women with edema can try to improve through the following methods: 1. foot soak and massage: soak feet or legs with warm water for about 20 minutes before going to bed, and massage appropriately after soaking to promote blood circulation, which is helpful for relieving edema; 2. elevate lower limbs: when sleeping or taking a lying position, you can put a pillow under your legs and elevate lower limbs, which is conducive to lower limb venous blood flow back and relieving lower limb edema; 3. appropriate Activity: Try to avoid standing or sitting for a long time, and move your body regularly, such as walking, to promote blood flow and reduce lower limb edema; 4, adjust the diet: Pay attention to the daily diet to eat less food with high salt content, and eat more high-protein food and fresh fruits, which can help improve metabolism and edema. Pay attention to getting enough sleep, wearing loose shoes, socks and clothes, and taking calcium supplements in time to reduce the occurrence of edema. If there is edema in the face in addition to lower limbs, or if the edema is more serious, it is necessary to be alert to edema induced by pathological factors, such as hypertension during pregnancy, kidney disease, etc. It is recommended to improve blood pressure, electrocardiogram, liver function, kidney function and other tests at the hospital in time to clarify the causes and give targeted treatment.