The cranium plays an irreplaceable role in the human body. Only under the strong protection of the cranium can the brain tissue function normally. However, various accidents in life are everywhere, such as traffic accidents, falling objects, etc. can lead to cranial defects. Cranial defects have a great impact on the brain, and patients should not be careless. The integrity of the cranial cavity is seriously damaged after cranial defect, and the intracranial environment and intracranial pressure become very unstable, which will directly affect the circulation of cerebrospinal fluid and blood in the cranium of the patient, and the normal operation of cerebral nerve function may also be affected, which will cause a series of cranial defect syndromes. For example, the patient may feel dizziness and headache, numbness and weakness of the limbs, easy to be irritable, and also have vision, hearing and smell disorders, and in severe cases, epilepsy may be induced. Cranial defects also seriously affect the appearance of beauty, the patient’s psychological burden is relatively large, and in the long term will become more low self-esteem, more depressed. Moreover, without the protection of the skull, the brain may be threatened at any time, especially if it is hit by sharp objects, which may injure the brain tissue and even threaten the safety of life. The damage caused by cranial defects cannot be underestimated, and it is crucial to go to the hospital in time for cranial repair surgery.