Gliomas are the most prevalent of all brain tumors and have a high mortality rate, with a median survival of only 12-15 months for the most malignant glioblastomas, calculated from initial diagnosis. The incidence of glioma is 5-8 per 100,000 population, and China reports that gliomas account for 40%-50% of all intracranial tumors, with slightly more men than women. The age of onset is mostly between 20 and 50 years old, with 30-40 years old as the peak age and children 5-10 years old. Among them, astrocytomas account for about 40%, and gliomas occurring in the cerebral hemispheres account for 51.4% of all gliomas. Because gliomas exist in the brain and develop insidiously, they are advanced once diagnosed and have a short survival period. Causes of glioma 1, ionizing radiation: including chemical toxins, radiation, electromagnetic radiation (including long-term cell phone magnetic radiation), etc. 2. Genetic factors: The family incidence of glioma has been reported with different results. The probability of tumor occurrence in children of patients whose parents have a history of tumor is significantly higher than that of the general population. In the past 20 years, chromosomes of glioma have been studied and it was found that there are abnormalities in chromosome group C, but the causal relationship with glioma is not clear. 3. Polluted air: It has been confirmed that not only workers who work in air-polluted environment for a long time have significantly higher chance of intracranial tumors, that is, the incidence of tumors in his children is also higher than that of other children. These occupations are mainly related to paper making, milling, handicraft, printing, chemical, oil refining and metal smelting, etc., mainly because of the presence of a large number of hydrocarbon compounds in the air. There are pesticide contaminated air is also included in this list. 4.Infection: Some animal experiments have confirmed that certain infections can induce intracranial tumors, especially the infection during pregnancy is a greater threat to the future of the fetus. 5. Accumulation of strain: Glioma online survey data shows that most glioma patients are between 40 and 60 years old. Patients in this age group are basically the backbone of their families, working under high load for a long time, not getting good rest and not being able to release their hearts. The course of glioma varies depending on the type of pathology and the location. Mental abnormalities Glioma located in the frontal lobe of the brain can disrupt the mental activity of the frontal lobe, causing mental abnormalities such as excitement, agitation, depression, repression, forgetfulness, and fiction. 2.Visual impairment Increased intracranial pressure can cause poor venous blood flow to the eye, leading to bruising and edema, which can damage the visual cells on the retina in the fundus of the eye, resulting in vision loss, which is very common among the early symptoms of glioma. Unilateral limb sensory abnormalities The parietal lobe located in the middle of the cerebral hemisphere is specialized in sensation. Glioma in this area often causes unilateral limb pain, temperature, vibration, and shape discrimination sensation to be reduced or lost. 4. Vomiting Due to the increase in intracranial pressure, the vagus nerve is stimulated, resulting in vomiting, which usually occurs after a headache and is jet-like.