Leg swelling in the afternoon in the morning is not swollen may be physiological reasons or pathological reasons, the specific treatment needs to be based on the actual cause, not a generalization. 1. Physiological reasons: prolonged sitting or standing for a long time will affect the venous return of the lower limbs, which will lead to swelling in the legs in the afternoon. Generally, it can be relieved after resting, and you can also elevate your legs to promote the recovery of edema, without special treatment. 2. Pathological reasons: heart failure and other diseases may lead to swelling in the legs in the afternoon. Heart failure is a cardiogenic edema, due to the patient’s cardiac insufficiency, venous blood stagnation, resulting in leg swelling. The swelling is usually most noticeable in the afternoon, and may be accompanied by weakness of the limbs, loss of energy, drowsiness and other symptoms. In patients with mild heart failure, the swelling is usually relieved after resting at night, and cannot be relieved in severe cases. Clinically, drugs are usually used to treat heart failure, such as isosorbide mononitrate tablets and digoxin tablets. If the patient has a high frequency of leg swelling in the afternoon and can not be recovered, it is recommended to consult a doctor as soon as possible to clarify the cause of the disease and then targeted treatment.