Reinforcing healthy qi and root is one of the most important Chinese Medicine methods in treating tumor. Thanks to the hard work by thousands of former Chinese Medicine doctors, its theory and mechanism have been greatly enriched. In the last decades, clinical doctors and medical scientists have performed lots of extensive exploration combined with modern clinical and basic medical science in treating tumor with reinforcing healthy qi and root method. The depth and width of scientific theory, functional mechanism and clinical application have been largely extended as well as a number of positive results. This passage reviewed the reinforcing healthy qi and root method in treatment of tumor.