Early symptoms of gum cancer are not bleeding of teeth, there are no specific symptoms in early stage of gum cancer, with the progress of the disease, there may be toothache and loose teeth, and in middle and late stage, there may be symptoms such as difficulty in opening mouth, numbness of lower lip and bleeding of teeth. There are atypical symptoms in early stage of gum cancer, and there may be no specific symptoms. With the progress of the disease, there may be toothache, loose teeth caused by destruction of alveolar process by gum cancer, which may affect chewing, etc. Generally, there is no typical gum bleeding. Gum bleeding often occurs in the middle and late stages, with the progress of the disease, the swelling increases in size and breaks down, and the symptoms of dental bleeding may appear. If there is any discomfort in the gums, it is recommended to consult a doctor in time, improve the examination, make a clear diagnosis and actively treat the disease to avoid delaying the condition.