Ventricular high-density casts are a conceptual category of diagnostic imaging. Ventricular high-density casts are usually cerebral hemorrhages in which coagulated blood clots fill the ventricular system to varying degrees, creating a cast model of the ventricles. Most cerebral hemorrhages are caused by rupture of a blood vessel in hypertension combined with small atherosclerotic arteries. Cerebral hemorrhage imaging CT examination, the lesion is mostly round or ovoid uniform high-density area with clear boundaries, and the ventricles are mostly high-density casting model when there is a large amount of blood accumulation in the ventricles. If cranial CT shows ventricular casts, it suggests that the condition is more critical. The brain tissue in the deep part of the brain is destroyed, and the patient may have a rapid increase in intracranial pressure, coma, brain hernia or even endanger the patient’s life. It is necessary to follow the medical advice to use mannitol, furosemide and other dehydrating diuretics to reduce intracranial pressure, and promptly carry out surgical treatment, such as bilateral ventricular puncture tube external drainage. At the same time, patients need to pay attention to rest, appropriate exercise, pay attention to light diet.