How long it takes for a wound to heal after a dog bite depends on the extent of the patient’s dog bite and whether the wound is co-infected and other factors for an objective analysis. First, if the patient’s dog bite is superficial, accompanied only by a small amount of bleeding, swelling and pain. Patients go to the hospital as soon as possible for local debridement and disinfection, suturing to stop bleeding, injection of tetanus and rabies virus vaccine, after close observation of the patient’s wound and no symptoms of infection, the patient’s wound can be completely healed in 7-10 days. Second, if the patient is more serious dog bite with active bleeding, the patient did not go to the hospital in time for wound debridement treatment, and did not inject tetanus or rabies vaccine. At this time, the patient’s wound may appear infected progressive aggravation, and in serious cases, even infectious shock, endangering the patient’s life, the wound healing time is longer.