The line connecting the upper lip to the gums (clinically known as the labial ligament) is broken. Depending on the severity of the wound, the wound can be left to heal on its own or undergo surgical debridement and suturing. 1. If the laceration is small and does not bleed significantly, it can be left to heal on its own; however, during the healing period, it is important to keep the mouth clean and avoid spicy and irritating foods to prevent infection and promote rapid wound healing. 2. If the laceration is deep and large and accompanied by a lot of bleeding, it is necessary to consult a doctor for surgical debridement and suturing to restore the normal shape and function of the lacrimal ligament; at the same time, it is also necessary to maintain oral hygiene, to avoid the symptoms of wound infection. It is recommended to seek medical attention for symptomatic treatment of laceration of the labial ligament to avoid delaying the condition.