There is no simplest way to determine gum cancer, and the determination of gum cancer needs to be based on clinical symptoms, imaging examination and pathological biopsy. 1. Clinical symptoms: the patient’s gum area may have color changes, localized lumps, swollen gums and other phenomena. 2. Imaging tests: The patient undergoes X-ray, CT or MRI tests to understand the progress of the disease. 3. Pathological biopsy: this test is the gold standard for confirming the diagnosis of gum cancer. If cancer cells are found, the diagnosis of gum cancer can be confirmed. Gum cancer is usually diagnosed from clinical symptoms, imaging examination and pathological biopsy. If patients have symptoms of gum cancer, they should actively consult the doctor and do not use medication on their own to avoid delaying the condition.