Cellulitis of the floor of the mouth can be treated as follows: 1. prevent asphyxia and toxic shock, according to the degree of respiratory distress, consider whether to do tracheotomy; 2. apply high-dose antibiotics intravenously to control infection, and apply hormones in appropriate amounts to improve systemic conditions; 3. local incision and drainage should be done as soon as possible to reduce tension, drain pus and necrotic tissue, and prevent the body from absorbing too much toxin and aggravating the disease Development. The incision and drainage can be performed under local anesthesia, from one side of the jaw angle to the opposite side of the jaw angle, making an arc-shaped incision parallel to the lower edge of the jaw, and sometimes a longitudinal incision can be made, similar to a T-shaped or inverted T-shaped incision, incising the broad cervical muscle, widely separating each gap, and the pus can flow out. If the infection is necrotizing, the pus is thin, contains bubbles, malodorous, and the soft tissue is gray-black, it can be flushed with 3% hydrogen peroxide and saline, and the hypertonic saline gauze is filled and drained.