Softening foci in the left basal ganglia region cannot be treated. Softening foci refer to cystic softening foci formed as a result of various destructive lesions that lead to necrosis and softening of brain tissues filled with cerebrospinal fluid. The common reasons for the formation of soft foci in the left basal ganglia region include cerebral infarction, cerebral hemorrhage and other diseases. It is impossible to recover from soft foci once they are formed, so the patients have to prevent the occurrence of cerebral infarction. Oral aspirin or Polivir should be taken to prevent platelet aggregation, and other risk factors for cerebrovascular disease should be prevented and treated, controlling blood pressure, blood glucose, blood lipids, and blood homocysteine. If the patient has atrial fibrillation, it is also necessary to prevent cardiac thrombus dislodgement leading to cerebral embolism, oral anticoagulant drugs such as rivaroxaban, warfarin this kind of drug.