How long it takes to recover from severe craniocerebral injury mainly depends on the severity of the craniocerebral injury, the degree of impaired consciousness and whether the patient is combined with other conditions, etc., and there is no definite specific time. 1. The more serious the craniocerebral injury is, the more serious the impairment of consciousness is, the longer the duration of coma is, the smaller the chance of awakening, and the longer the recovery period is. 2. Heavy craniocerebral injury for a long time coma, bedridden, it is easy to appear other complications, clinical common accumulation of pneumonia, bedsores, long time indwelling urinary catheter, prone to urinary tract infections, at this time the need to deal with the complications mentioned above, and its recovery period needs to be prolonged accordingly. 3. Heavy craniocerebral injury patients, due to prolonged bed rest, due to prolonged inactivity of limbs, easy to appear limb muscular atrophy, if early rehabilitation training, can shorten the recovery period, which is conducive to the recovery of patients. It is recommended that patients follow the doctor’s instructions, do not be impatient, and actively cooperate with the treatment, so as not to delay the condition.