Tongue bleeding is not related to liver cancer, but may also be caused by trauma, oral ulcers and venous malformation. Liver cancer patients have abnormal liver function, which then causes blood clotting disorders that can lead to tongue bleeding. Although the disease may make the tongue bleed, it does not mean that tongue bleeding is a sign of liver cancer. Tongue bleeding is more related to the following factors. 1. Trauma: the tongue is located in the mouth and helps the teeth to chew food, if you talk while eating, or eat too hard food may bite the tongue and cause bleeding. 2. Mouth ulcers: Sublingual ulcers that are deep and damage blood vessels can bleed and be painful. 3. Venous malformation: Because there are a lot of blood vessels inside the tongue muscle, some veins, if malformed, will form some small protrusions on the mucous membrane of the back of the tongue, which will bleed if ruptured due to injury. There are many causes of tongue bleeding, patients should go to the hospital in time to clarify the cause of the disease, to avoid delaying the disease and causing adverse consequences.