Cranial CT is the most effective and rapid method to confirm the diagnosis of intracranial hematoma. Clinically, changes in intracranial hematomas are usually followed dynamically based on what is seen on cranial CT examinations. At the beginning of the disease, a fresh hematoma shows a uniform and high density (white on CT films), which gradually decreases as the hemoglobin within the hematoma breaks down (the color of the lesion on CT films gradually changes from white to black). A hematoma up to 2 cm in diameter usually becomes isodense in 3 weeks or earlier, while a large hematoma often takes 4-6 weeks to evolve to isodensity. However, the shrinkage of the hematoma seen by CT is judged only by the gradual change of high density to isodensity, when in fact the clot does not change much in size and is not really absorbed. In recent years, with the increasing maturity of neuroendoscopic techniques, the endoscopic ventricular exploration has led to a new understanding of the absorption of intracranial hematomas. Case 1 5 month old boy with ventricular hemorrhage confirmed by cranial CT at birth, CT film as follows: 12 days later, repeat cranial CT showed intracerebroventricular hematoma absorption, film as follows: 5 months later, hydrocephalus appeared, cranial MRI showed ventricular dilatation with no signs of intracerebroventricular hemorrhage. The film is as follows: Ventricular exploration by electronic flexible neuroendoscopy revealed a large number of old intracerebroventricular hemorrhagic spots still present. The endoscopic findings are as follows: In this case, 5 months after the ventricular hemorrhage, a large number of old hemorrhagic spots were still found within the ventricles by neuroendoscopic technique exploration, indicating that the hematoma was still not completely absorbed after at least 5 months. The destruction products of these hematomas will continue to produce a series of secondary damages to the brain tissue. It is thus clear that early removal of the hematoma after intracranial hemorrhage to alleviate secondary brain damage can contribute to the recovery of distant neurological function. Case 2 58-year-old female, left thalamic hemorrhage, treated cranial CT showed that the left thalamic hematoma was hypointense: endoscopic exploration revealed a mechanized hematoma: suggesting that even though the hematoma was hypointense on CT, it was not actually completely absorbed. It is suggested that early and complete removal of the hematoma after intracranial hemorrhage is important for long-term neurological recovery.