Thymoma may recur after removal. However, the recurrence rate or risk of recurrence after thymoma removal is not the same, which is based on the staging and pathology of thymoma. If the staging is earlier, and at the same time, the tumor has no metastasis and the pathological type of the tumor is better, the patient will have a lower risk of recurrence; if the tumor is relatively more malignant or the surgical resection is not complete enough, the risk of its recurrence will be higher. After thymoma surgery, patients should maintain a positive mindset and avoid adverse emotional stimulation and fluctuation; eat a balanced diet with plenty of fresh vegetables and fruits; and exercise in moderation and at the right time under the guidance of the doctor in order to enhance the resistance of the body. It is necessary to pay attention to patients should follow up on time, because follow-up can be early detection of recurrence or metastasis signs. Review at least once every 3 months within 2 years after surgery, then at least once every 6 months, and at least once a year after 5 years.