Glioma is the most common primary brain tumor. In terms of pathology, the World Health Organization classifies gliomas into grades I, II, III and IV. Grade I gliomas are benign tumors that occur in children and are treated mainly by surgery; grade III and IV gliomas are malignant brain tumors that occur in middle-aged and elderly people and require a combination of surgery, radiotherapy and chemotherapy; grade II gliomas (the most common low-grade gliomas, hereafter referred to as Grade II glioma (the most common low-grade glioma, hereinafter referred to as “grade II glioma”) is between benign and malignant, and is more likely to occur in middle-aged and young people, and is more socially dangerous. Surgical resection is the first step in the treatment of low-grade gliomas. The purpose of surgery is to clarify the pathological diagnosis and remove the lesion. However, gliomas often grow like “tree roots” and have poorly defined borders with normal brain tissue, making complete resection difficult in more than half of patients. Even if the postoperative imaging (CT and MRI) review shows “complete resection” in some patients, there are still microscopic tumor cells remaining in the brain tissue at the cytological level, which is a source of tumor recurrence in the future. For patients with residual tumors after surgery, radiation therapy is usually required. The need for chemotherapy is determined by the patient’s tumor condition. Radiotherapy and chemotherapy can control the development of low-grade glioma to a certain extent, but whether it can be cured is determined by long-term imaging follow-up. Low-grade gliomas are better treated, with 40% of patients with low-grade gliomas living longer than 10 years. It is important to note that in addition to “root-like” growth, some tumors can become malignant. Malignancy is most common within 3 to 5 years after tumor removal. If malignant changes are not detected in time, they can grow rapidly and can become large or even life-threatening in a short period of time. Regular and timely imaging review plays an important role in the diagnosis and treatment of low-grade gliomas. Regular and timely imaging review can help doctors understand the changes of normal brain tissue and tumor, and can detect tumor recurrence and malignant changes at an early stage. The recurrence and malignancy of tumor are not terrible, as long as they can be detected early and timely, if the lesion is small, it can be treated by stereotactic radiotherapy or chemotherapy. However, if the tumor is not detected in time, by the time the patient feels discomfort, the tumor is already huge and invades important nerve tissues, which is more difficult to treat and the treatment effect is not ideal. According to our experience over the years, the patients who have good treatment effect are those who can follow the doctor’s requirement for regular review.