The first thing you need to do is to find out the cause of the swelling, and then treat the cause. There is no so-called “fastest” way to reduce the swelling of the feet, and it is recommended to follow the doctor’s instructions to standardize the treatment. If the swelling is caused by prolonged sedentary activities after surgery, you can eliminate the swelling by moving, soaking the feet, resting and elevating the feet. If the swelling is caused by deep vein thrombosis, it is necessary to stay in bed absolutely, elevate but avoid massaging the affected limbs, and use anticoagulant and decongestant drugs, such as Enoxaparin injection, Fibrinolytic enzyme injection, etc. as prescribed by the doctor, to prevent the continuous spread of thrombus. Due to the post-surgical stress and the healing of the incision, a large amount of protein is consumed in the body, thus it may lead to low-protein edema, and it is necessary to strengthen the nutrition and supplement the albumin in order to reduce the symptoms of swelling of the feet. At the same time, the diet can be more protein-rich foods, such as fish, eggs, milk, etc., for supplementing the body’s required nutrients to promote the body’s recovery has a certain role. In addition, other causes may also cause postoperative foot swelling, such as the heart, liver, kidney, etc., should be timely consultation, improve the relevant examination, clear diagnosis, and then give targeted treatment.