Help! What should I do if the wound doesn't heal after dog surgery?

Disinfect every day. At that time, when my bitch was neutered, I stayed with her in the living room for 7 days. I gave the wound an anti-inflammatory drug every morning and evening, hung two bottles of normal saline every day for the first three days, wiped the blood on the wound with medical cotton and fed Prado healthy peptide. Only after the operation can the wound heal quickly.