Diuretics are preferred in elderly people with swollen feet, and commonly used drugs include furosemide, dihydrochlorothiazide, and amisulpride, etc. While taking diuretics, attention should be paid to maintaining the balance of potassium and other electrolytes in the blood. Cardiac drugs such as digoxin can be taken orally, which can enhance the contraction of the heart muscle and reduce the accumulation of body fluid in the peripheral blood vessels, thus reducing foot swelling. In addition, you can also take vasodilators such as nitroglycerin orally, and some Chinese medicines such as thromboxane, ginkgo and panax ginseng tablets can also eliminate swollen feet. For some edema caused by inflammation or allergy in the lower limbs, oral cephalosporin or levofloxacin antibiotics and glucocorticoids can be taken to reduce the local edema, and diet should include more fruits and vegetables with diuretic effect such as winter melon, pumpkin and watermelon, as well as drinks such as honeysuckle and mung beans.