Occupying tumor in left basal ganglia area needs to be analyzed according to the size of the tumor and the benign or malignant nature of the tumor. Benign tumors with small diameter can be treated conservatively, while malignant tumors usually need timely surgical treatment. 1. Conservative treatment: For patients with benign brain tumors with small size and no obvious symptoms, they can be observed and followed up regularly, and it is recommended to review MRI or CT every 3-6 months to observe the changes of the tumor. 2. Surgery: For patients with malignant tumors, regardless of the size of the diameter of the tumor, timely surgery is usually needed when the tumor is found, and craniotomy microsurgery can be carried out to remove the tumor, and pathology is routinely sent after the surgery. In addition, postoperative radiotherapy is also needed to improve patients’ quality of life and prolong their lives. It is recommended that patients with occupying tumors in the left basal ganglia region should consult the doctor in time and be treated actively under the doctor’s guidance, so as to avoid delaying the condition.