The exact time for tumor review mainly depends on whether it is benign or malignant, benign is recommended to be reviewed once in half a year, and malignant is reviewed once in a month within one year after treatment. Tumor patients need to do a good job of rechecking after cure. Generally, the regular review should be done every three months. Every six months from the third to the fourth year, and can be reduced to once a year after five years. The purpose of review is to determine whether chemotherapy and radiotherapy are effective and to follow up to observe the effect, but tumor cells cannot be completely eliminated in general, and there may be undiscovered foci and smaller micro-metastases, which are very easy to recur. In addition, depending on the cause of the disease, the items of routine review are also different. If tumor markers are elevated on three consecutive follow-ups, imaging should be considered, and if no lesions are detected on imaging, more frequent follow-ups are needed.