Hypertension is mainly due to high pressure on the side of the blood vessel wall, which does not directly cause swollen feet. The appearance of swollen feet is as follows: 1. Complications: If there is long-term hypertension leading to hypertensive heart disease, renal insufficiency, cardiac insufficiency, especially right heart insufficiency, swollen feet will occur. In addition, if long-term hypertension leads to peripheral vascular, especially lower limb vascular atherosclerosis, poor venous return, it will also lead to swollen feet. However, hypertension may induce foot swelling only after a series of complications, and it is bilateral and symmetrical, and most will not have foot swelling on one side alone. Early high blood pressure, as long as it can be actively treated and does not lead to the emergence of complications, generally has nothing to do with swollen feet; 2. Side effects of drugs: some patients, especially those taking antihypertensive drugs, may cause swollen feet. In addition, taking antihypertensive drugs of the calcium antagonist class can also lead to swollen feet. It is possible that the side effects of the drugs cause swollen feet, and not necessarily as a direct result of hypertension.