If lung cancer metastasizes to the adrenal gland, it can be divided into two kinds of manifestations: one can have no symptoms, only discovered during the process of abdominal CT, MRI or PET-CT; the other is that the patient will have some symptoms, and the specific symptoms are related to the location and size of the adrenal metastasis, for example, when it invades the peritoneum or the metastatic lesion is larger, the patient may have pain or back discomfort, etc. In conclusion, if adrenal metastasis occurs in lung cancer, some patients do not have any symptoms and need to be detected by CT or MRI. Other patients may experience local discomfort, such as back discomfort. In such cases, patients must seek timely medical consultation to detect the disease in time for further treatment.