Swelling of the right foot is more common in clinical practice and is mainly caused by the following reasons: 1. deep vein thrombosis of the right lower limb, venous return of the right lower limb will be obstructed, and swelling of the right foot will appear due to increased pressure in the venous vessels; 2. various causes of cardiac insufficiency, especially right heart insufficiency, the resistance of systemic venous blood return to the heart will increase, resulting in stasis of the body circulation, and edema will first appear in the lowest 3, inflammation of the right foot itself or soft tissue contusion, fracture, etc. can cause edema of the right foot, and if the right foot is complicated by bacterial infection, the swelling is more obvious on the basis of the injury; 4, liver and kidney insufficiency, the body’s ability to synthesize albumin is reduced, and a large amount of albumin is lost through the kidneys when suffering from nephrotic syndrome, which can easily form hypoalbuminemia and cause tissue edema, for example. For example, edema of the right foot.