Different causes of cerebral hemorrhage, its surgical methods and surgical time are also different, as follows: 1, hypertensive cerebral hemorrhage: if drilling and drainage, the operation time is shorter, about ten minutes; if the bleeding volume > 30ml, can be used to small bone window craniotomy hematoma removal surgery, it takes about one hour; if the midline of the brain is obviously shifted, combined with brain hernia, it is necessary to carry out the bone flap to open the cranium to remove the hematoma, which requires about two hours; 2, rupture of aneurysm hemorrhage: it is necessary to find out the site of rupture, to be clipped, which takes about 2-3 hours; 3, bleeding of the cerebral vascular malformation: the need for the removal of deformity of vascular clusters, it requires about three to four hours.