Cold compress-cold compress within 3 days after operation. Efficacy: 2 days after operation is the time when the wound blood vessels are easy to bleed. At this time, ice compress can make the blood vessels in the operation site contract in cold weather, reduce bleeding and be beneficial to recovery.

Hot compress-hot compress can only be started 4 or 5 days after operation. Efficacy: Hot compress can raise body surface temperature, stretch subcutaneous tissue, relax and expand spasmodic capillaries, accelerate blood flow, promote metabolism, promote blood circulation and remove blood stasis, promote granulation and diminish inflammation, relieve swelling and pain, and soften scar tissue.

Puyang doctor Zhang plastic