Generally speaking, cancer cells do not “magically disappear”. However, after surgical treatment, radiotherapy and other treatment measures, cancer cells may decrease and disappear. Cancer cells are cells that grow out of control and have the ability to proliferate, spread and metastasize. The production of cancer cells may be related to the activation of proto-oncogenes and the inactivation of oncogenes. At this time, the inhibitory effect of oncogenes on the production of cancer cells decreases or disappears, and the cancer cells basically can not disappear by themselves, therefore, the situation of “magical disappearance of cancer cells” does not usually occur. If you are suffering from cancer, you should actively carry out treatment under the guidance of your doctor, maintain a good mindset, and exercise appropriately to strengthen your immunity. Regular checkups should be conducted with a view to improving the prognosis.