Low-grade tumor is not cancer. Low-grade tumor is a clinical pathological staging method for tumor. Low-grade tumor may include mild atypical hyperplasia of tumor, and moderate atypical hyperplasia, which often suggests that the heterogeneity of tissue cells is mild and has not yet reached the criteria for diagnosing cancer. In this case, patients are allowed to review regularly, but local treatment, including treatment with laser and freezing, can be performed in order to prevent cancerous changes. If the patient’s low-grade tumor gradually develops into high-grade intraepithelial neoplasia, it may indicate that the tissue has developed carcinoma in situ or formed precancerous lesions. Clinically, it is not recommended for the patient to continue to observe the condition, and it is suggested to perform surgery in a timely manner to avoid the patient’s longer delay, which may cause the tumor cells to spread or metastasize and endanger the patient’s life.