Wound suppuration is a more serious manifestation of wound infection. Wound infection is usually manifested by the wound not healing for a long time, the external manifestations of the wound, whether the body temperature is elevated, and routine blood tests. 1. Wounds do not heal for a long time: if the wound does not heal for a long time, then consider that the wound is infected. Under normal circumstances, wounds without infection, after thorough debridement and suturing, extremity wounds usually heal in about 10 to 12 days, head and face wounds usually heal in about a week. 2. External manifestations of the wound: after the wound becomes septic, there may be local redness, swelling and pain, purulent secretion from the wound, accompanied by an increase in local skin temperature and other manifestations. 3. Whether the body temperature is elevated: when the wound is not infected with pus, the body temperature will not be elevated, if the patient has an elevated body temperature, then consider whether there is a wound infection. 4. Blood test: blood test shows that the number of white blood cells and neutrophils will exceed the normal value. Patients with wound infection need to go to a regular hospital in time for treatment and treatment by a doctor.