The development time of low-grade tumor to cancer varies according to the location, tissue type and individual’s physical constitution, some patients may not develop cancer while some patients may develop cancer within months. Clinically, the occurrence of cancer needs to be judged according to the patient’s physical quality and various examination indexes, which may occur in 1-2 months or not for several years, and whether cancer occurs or not depends on the patient’s own living habits, physical quality and health indexes. Some patients pay attention to maintenance, through good lifestyle and treatment, the prognosis is better, and the tumor will be cured and will not become cancerous; some patients have poor intervention effect, which may lead to cancer, and in this case, timely surgery is recommended. Low-grade tumors need to be reviewed regularly, and cooperate with doctors for treatment, do a good job in daily life care, and develop good dietary and living habits to reduce the chance of cancer in low-grade tumors.