Hypertension alone does not usually cause swollen feet. Once swollen feet occur in hypertension, attention should be paid to whether the patient has complications of hypertension, i.e. whether hypertension causes internal organ damage, such as whether it causes heart failure, and whether hypertension causes kidney failure, both of which are common hypertension complications. Once it causes heart failure, swelling of the feet may occur, and once it causes kidney failure, swelling of the feet may also occur. Internal organs causing swelling should be further examined, such as performing ultrasound to observe whether the heart is enlarged and whether cardiac function is normal. If the kidneys are suspected of causing swelling, laboratory tests should be performed to see if there is urine protein and if the kidney structure is atrophied or if the kidneys are enlarged. In addition, hypertensive patients usually take a calcium antagonist among the blood pressure drugs, and this type of drug has a side effect of swollen feet. Therefore, whether the swelling is caused by drugs or by damage to internal organs, it is necessary to seek medical consultation with a specialist to identify and further guide the future diagnosis and treatment.