1.Morning headache: Headache often occurs at four or five o’clock in the morning, often waking up with pain in the middle of sleep, and the headache gradually relieves or disappears after getting up with light activities, so it is called “morning headache”. Tumor in the posterior cranial fossa can cause neck pain and radiation to the orbit, and the degree of headache gradually increases with the progress of the disease. 2.Visual impairment: Increased intracranial pressure will cause edema due to poor venous blood flow back to the brain, resulting in vision loss. 3. Jet vomiting: Compared with vomiting in gastrointestinal diseases, vomiting in brain tumor patients is not accompanied by abdominal distension, nausea and diarrhea, but when the intracranial pressure is increased, “jet vomiting” will occur after headache. 4. Mental abnormalities: Brain tumor located in the frontal lobe of brain can destroy the mental activity of frontal lobe, causing excitement, agitation, depression and other mental abnormalities. Phantom smell: Phantom smell occurs because the temporal lobe located in the lower part of the brain is stimulated by the tumor, and patients often smell odors that do not exist, such as the smell of burning rubber, burnt rice, etc. 6.Monocular protrusion: one side of the eye protrudes forward, and in severe cases, the eyelid does not close completely. 7. Hypesthesia: The parietal lobe located in the middle of cerebral hemisphere is specialized in sensation, and tumor in this part can cause unilateral limb pain and form discrimination and other sensory loss or disappearance. 8.Unilateral deafness: If there is no history of otitis media or trauma, but only one ear has progressive hearing loss, accompanied by ipsilateral tinnitus, it is likely to be caused by intracranial tumor compressing the auditory nerve. 9. Hemiplegia: One is hemiplegia or hemiparesis, which is manifested by little or no movement of the limb on the diseased side; the other is disorder of one limb, which is manifested by clumsy or unstable movement. 10, gigantism and acromegaly: seen in pituitary tumors, adolescents show rapid growth and abnormal height; adults appear acromegaly, such as large chin, large nose, abnormally large hands and feet, etc.