The three major symptoms of increased intracranial pressure are headache, vomiting and optic papilloedema. When brain tissue swelling, intracranial occupying lesions, excessive secretion and absorption of cerebrospinal fluid, obstruction of cerebrospinal fluid circulation or excessive cerebral blood perfusion can lead to increased intracranial pressure, the specific symptoms are: 1, headache: patients clinically manifest as headache, often head or forehead swelling and pain, a continuous throbbing sensation, at night, especially in the second half of the night, the symptoms are aggravated 2. vomiting: some patients experience violent vomiting in the form of jets, which is a typical feature of increased intracranial pressure; 3. optic papillar edema: some patients will have decreased vision and blurred vision due to compression of the optic nerve, and fundoscopic examination can reveal that patients will have changes of optic papillar edema. Acute intracranial pressure increase is divided into acute and chronic, and the symptoms are different as follows: 1. Acute intracranial pressure increase: the headache is often severe, in addition to the above symptoms, there will be positive meningeal irritation signs, and some patients will have hemiplegia or hemianesthesia, slurred speech; 2. Chronic intracranial pressure increase: the performance is less typical, and it is easy to be misdiagnosed clinically. Headache, vomiting is rare, decreased level of consciousness is only seen in some patients with changing conditions, and physical examination reveals edema or atrophy of the optic papilla, other examinations may not necessarily have positive findings. Therefore, while dealing with increased intracranial pressure, it is important to identify the cause as soon as possible and address the signs and symptoms of increased intracranial pressure from the underlying cause.