Brain tumor can trigger convulsions. The compression of brain tissue by brain tumor will lead to local drainage obstruction of brain tissue, resulting in the occurrence of cerebral edema, as well as brain tumors, especially malignant tumors, will release tumor necrosis factor and other toxins, which will stimulate brain tissue. After the brain tissue is stimulated, especially the cerebral cortex is stimulated, which will lead to localized abnormal discharges, thus causing epileptic seizures. When the tumor is located in the frontal and temporal lobes, the chances of seizures are the greatest, and patients often exhibit grand mal seizures, which are characterized by sudden loss of consciousness, foaming at the mouth, limb spasms, convulsions and other symptoms. For seizures after brain tumor, the fundamental measure of treatment is to take craniotomy tumor resection to eliminate the primary lesion that triggers epilepsy.