The skull has a vital role in human health, but nowadays the problem of cranial defects is very frequent, and it is very necessary for people to pay attention to it. The unstable intracranial environment and intracranial pressure after cranial defects will directly affect the cerebrospinal fluid and blood circulation, and cerebral nerve function is affected, which may lead to a series of cranial defect syndromes. The danger of cranial defects cannot be underestimated, and it is crucial to go to the hospital for cranial repair surgery in time once a cranial defect occurs. Can fluid build up after cranial repair on its own? Fluid buildup after surgery is a common phenomenon that may occur in many surgical procedures, which is caused by tissue leakage after surgery, and there is a certain chance that you may face such a situation when you have a skull repair surgery as well. If there is not a lot of fluid, it will be absorbed by the surgeon, but if the amount of fluid is too large, the surgeon may need to take care of it, and it can usually be solved properly. However, since the emergence of the new polyether ether ketone PEEK material, the chances of postoperative effusion after cranial repair surgery have really been greatly reduced, which makes up for the shortcomings of the previous materials and achieves very good clinical results. PEEK material is a very advanced polymer material with excellent performance, it is very close to human skull in terms of strength, elasticity, hardness and histocompatibility, etc. Generally, there will be no rejection and infection after cranial bone repair surgery using PEEK material, it will not wear out the scalp, and there will be very little effusion, which makes it an ideal material for cranial bone repair surgery. At present, our team has successfully adopted this PEEK material to carry out cranial bone repair surgery, and we also continue to improve the technology and material optimization design, the introduction of the concept of cosmetic plastic surgery, in a high degree of restoration of the skull, but also to make the appearance more beautiful.