Brain tumors are also known as intracranial tumors. Early detection of some signal symptoms of brain tumors is crucial for early treatment. The following ten symptoms must be alerted. 1.Symptoms of increased intracranial pressure, including headache, vomiting and vision changes, etc., with progressive aggravation of symptoms. 2, mental, personality and memory changes; 3, changes in the sense of smell; 4, women appear unexplained menopause, lactation, obesity; men appear impotence, hypogonadism, etc.; 5, children’s developmental delays, polyuria; 6, visual acuity, visual field disorders; 7, tinnitus or tinnitus after the loss of hearing, accompanied by facial sensory retardation, choking on drinking water; 8, walking unsteady, posterior occipital discomfort or pain; 9, to exclude the cerebrovascular factors. The patient presents with numbness, weakness or mild motor disorder of one side of the limbs; 10, new unexplained epileptic seizures.