Usually, in life, there are often patients or family members will ask whether tumor patients should take such and such supplements after surgery. People should understand one thing: the road is as simple as possible. One principle should be followed: the simpler the treatment is under the premise of being effective, the better. Excessive use of drugs may be counterproductive, because there must be mutual coordination and antagonism between drugs, and patients may not benefit but suffer from it. It should be achieved: a relaxed mood, a balanced diet, and appropriate exercise as the main combination with simple and effective drugs. Respect science and believe in science.