Intracerebral hemorrhage (ICH) refers to bleeding within the brain parenchyma and ventricles and can be caused by rupture of arteries, veins or capillaries, with arterial rupture bleeding being the most common. It is generally classified into two categories according to the cause: injurious or non-injurious. Injurious cerebral hemorrhage is outside the scope of this chapter. Non-invasive cerebral hemorrhage, also known as spontaneous cerebral hemorrhage or primary cerebral hemorrhage, refers to spontaneous hemorrhage of blood vessels in the brain parenchyma. Other causes include intracranial aneurysm rupture, cerebrovascular malformation rupture, brain tumor bleeding, arteritis, blood disorders, complications of anticoagulation therapy, etc.