The severity of a 16ml brain hemorrhage depends mainly on the location of the hemorrhage. If a person is compared to a house, the brain stem is equivalent to the foundation of the house, and the cerebellum is the part next to the brain stem, so bleeding in the cerebellum and brain stem is very serious, because once the brain bleeds in that part, it is equivalent to the foundation of the house being shaken, so the house may collapse, so it is relatively serious. If the brain hemorrhage is other than the brain stem and cerebellum, the brain hemorrhage of 16ml is not very serious, and the patient may only have some headache, hemiparesis, limb dysfunction and other symptoms, and if active treatment is carried out later, such as blood pressure control and early rehabilitation, the patient’s prognosis is generally good.