Patients after craniotomy can eat blackfish if they are not allergic. Patients after craniotomy need to pay attention to adequate nutrition after resumption of diet, blackfish is rich in protein and other nutrients, which is beneficial to the recovery of the patient’s body to a certain extent, such as previous allergies to fish, patients after craniotomy can eat blackfish, but need to pay attention to the taste of the light, and to avoid accidentally swallowing fish spines. In addition, it is not recommended to eat blackfish if the eating function is impaired. At the same time, it should be noted that blackfish should be eaten in moderation, and reasonably with fresh vegetables, fruits and staple foods. During the recovery period, patients should also carry out moderate activities and rehabilitation therapy under the guidance of physicians, pay attention to rest, prevent falls, and avoid emotional stress and exertion.