Simply speaking, intracranial tumors refer to all tumors occurring in the skull, including primary and metastatic, intracerebral and extracerebral, and there are dozens of kinds of them in terms of tissue classification alone. In the past, due to the backwardness of diagnostic technology, they were found relatively rarely, and some of them were even detected only at autopsy. Comprehensive domestic and international data report that the incidence of intracranial tumors is currently increasing, about 1-4 per 10,000 people, and the incidence rate at autopsy is even higher, at about 2%. That is to say, the incidence rate of intracranial tumors is still very high, and the incidence rate may vary from region to region according to the combination of factors such as regional characteristics, environmental conditions, living standards, and development of knowledge and science and technology, etc. However, in a city of 1 million people, 100-400 people may be found to have intracranial tumors in a year. This data tells people that it is necessary to recognize intracranial tumors and increase some knowledge in this area, so as to achieve early detection and early treatment and live a good life. It is generally believed that we can insist on the following two points: once you find yourself suddenly having headache, blurred vision, hearing change, tinnitus, abnormal menstruation for women, change in appearance for men, hoarseness and other abnormal feelings and changes. Do not miss to see a neurologist, while insisting on doing a nuclear magnetic or CT examination; no matter how busy, how difficult the economy, do a health check every year, can not ignore the head examination. Adhering to these two points will not delay the treatment of intracranial tumor for a long time. Of course, once found intracranial tumor, it is better to go to neurosurgery for consultation.