It is generally difficult to recover after 1.5 years of extra-heavy craniocerebral injury. For patients with extra severe craniocerebral injury, the condition is more serious, and it is difficult to fully recover to normal, because extra severe craniocerebral injury has already caused damage to the important functional areas, and the patient’s brain cells have already died in large numbers, and once the brain cells have been damaged, the later stage is irreversible, so it is impossible to recover to normal. Extra-heavy craniocerebral injury about 1.5 years, time is also relatively long, so in this case want to return to normal also has some difficulty, because the best recovery period after craniocerebral injury is within half a year, at this time the brain cells are not completely dead, but through the later functional training, can play a certain therapeutic role. However, the duration of the disease is relatively long, so the brain damage is basically irreversible. After extra severe craniocerebral injury, it is necessary to cooperate with doctors to carry out rehabilitation training or take physical therapy to carry out regular treatment.