The time when edema begins varies for each pregnant woman. Some pregnant women may begin to experience edema in both lower extremities around 6 months of pregnancy, and some may not experience edema until around 8 months of pregnancy. Each person has a different metabolic rate and body constitution, so the time to develop edema varies. Some pregnant women do not even experience edema during pregnancy, so it is necessary to judge according to the actual situation. The appearance of edema in pregnant women is mainly due to the enlargement of the uterus compressing the inferior vena cava, resulting in poor blood return to the lower limbs. If there is edema, it is recommended to make timely adjustments, eat less salt and sugar foods, eat a light diet, massage the lower limbs appropriately, which can help relieve edema, and eat more diuretic foods, such as winter melon.