Swelling during pregnancy can be categorized into generalized swelling during pregnancy and swelling during pregnancy with complications, such as swelling with preeclampsia, which is common in clinical practice. However, the treatment of ordinary pregnancy swelling and pregnancy swelling with pregnancy complications are different. 1. Ordinary swelling during pregnancy: Progesterone and estrogen change during pregnancy, causing water retention in the tissues and leading to swelling. Sunken edema of the limbs, especially the ankles of the lower limbs, usually does not require special treatment and can be observed. 2. Swelling during pregnancy due to pregnancy complications: for example, swelling due to pre-eclampsia, which is mostly caused by nutritional deficiencies, abnormal trophoblast invasion, abnormal immune regulation, and vascular endothelial damage. Mild patients can take nicardipine and phentolamine under doctor’s supervision. Termination of pregnancy is recommended for severe patients. Swelling during pregnancy is ruled out as a result of physiological causes, should go to the hospital in time for consultation, early detection of the problem as early as possible treatment, not blindly use their own medication.