Thymoma type b2 can be cured completely, and it belongs to the less malignant type of thymoma in clinic, which needs to be treated in time once found. Thymoma usually refers to the tumor occurring in lymphocytes or epithelial cells of thymus, which usually grows within the peritoneum and does not metastasize to other surrounding tissues. At present, complete resection of thymoma is the most common surgical procedure for the treatment of thymoma, and its prognosis is good, especially thymoma type b2 can be completely cured. Besides, since thymoma has no obvious symptoms in the early stage, it is often found during physical examination, but when the tumor grows to a certain size, symptoms such as cough, chest tightness or chest pain will usually appear.