The fastest way to reduce swelling does not exist clinically. After maxillary cyst surgery, the swelling can be reduced by physical therapy, medication, surgery and other methods. 1. Physical therapy: cold compresses can be applied within 48 hours after maxillary cyst surgery to limit the scope of swelling, and hot compresses can be applied after 48 hours to accelerate local blood circulation and eliminate swelling. 2. Drug treatment: patients can use amoxicillin, sodium heptaphyllum saponin and other drugs to reduce swelling, anti-inflammatory treatment. The medication should follow the doctor’s instructions. 3. Surgery: If the swelling is more serious and accompanied by pain after the operation, an abscess is considered. Surgical incision and drainage is needed to reduce the swelling. In addition, patients should maintain a light diet after the operation to avoid stimulating the wound. If the swelling fails to subside, it is recommended to consult a doctor as soon as possible to receive professional treatment.