When the surface of the foot is smashed and swelling occurs, the first step is to rule out the possibility of a fracture. If there is no obvious fracture, physical therapy can be taken to reduce the swelling. Within 24-48 hours, ice should be applied locally, using ice or chilled mineral water, wrapped in a towel and placed on the local swollen area, which can delay capillary exudation and reduce edema in the short term. After 48 hours, you can apply hot compresses to the swollen area, and you can also combine microwave and infrared physiotherapy to promote local blood circulation and accelerate blood flow, which can reduce local exudation and thus indirectly improve the swelling. At the same time, bed rest should be taken, and the surface of the foot should be elevated above the heart level during rest to facilitate venous return of the lower limbs and reduce the degree of swelling. If the swelling is accompanied by significant pain, you can take oral pain medications, such as Fenbid and Tramadol tablets, or you can spray Yunnan Baiyao aerosol locally to reduce the local swelling and pain.