There are many reasons for foot swelling, some people find their feet swelling more serious, the original shoes are worn tighter, must pay attention to the following problems: 1, lower limb venous reflux abnormalities, some people may stand for a long time, there are lower limb varicose veins or lower limb venous valve function abnormalities, such patients walking or standing for a long time, will occur feet or lower limbs, calves, ankles swelling. Such people need to elevate their legs slightly at night to improve venous reflux, and will find the swelling reduced in the morning after waking up. Patients should clarify their cardiac function and try to add anti-heart failure drugs as soon as possible to improve the symptoms, especially diuretic drugs; 3. A small number of patients have swelling caused by taking some drugs or other diseases, such as hypothyroidism or taking antihypertensive drugs like nifedipine, and after clarifying the cause and removing such causes, foot swelling will improve.