If the metastasis is located in the frontal lobe or temporal lobe, the patient may have abnormal behavior or mental state, such as urinating and defecating anywhere, swearing, irritability, etc.; if the patient has increased intracranial pressure, the patient may also have headache, nausea and vomiting. If the functional areas are involved, the patient may have impaired limb movement or even paralysis of limbs. At this time, the patient needs to undergo head-enhanced CT or head-enhanced MRI to clarify whether there are intracranial metastases. Cancer patients are recommended to undergo regular head-enhancing CT or head-enhancing MRI to detect metastases and receive treatment as early as possible.