Deep tongue wounds without stitches usually can not heal normally, there may be wound infection, bleeding, serious cases can cause systemic infection, after healing, there may be a large scar, affecting the tongue’s activities, as follows. 1. Wound infection: there are many kinds of bacteria in the oral cavity, if the tongue wound is deep and not stitched, the bacteria can enter the wound and cause it to become infected, with symptoms such as pain, swelling, pus, etc. The bacteria can reach the whole body through the blood circulation and cause systemic infection symptoms. 2. Bleeding: Because of the rich blood flow in the tongue, the wound will ooze blood continuously. 3. Large scar: The tongue has a large degree of daily activity, and the wound may heal in a wrong position without suture, resulting in the tongue becoming shorter and affecting the tongue’s movement and articulation function. It is recommended to go to the hospital in time to receive professional treatment as soon as possible.