It is not uncommon for patients to waste food because of avoidance of “hair”, which may lead to misunderstandings. Tumor patients must pay attention to the science of avoiding food, don’t listen to the so-called “miracle doctors” and folk misleading misinformation without basis, delaying the treatment and recovery of tumor. When it comes to “hairy things”, people will think of old goose, rooster, carp, pig’s head, bamboo shoots, etc. There are many different opinions and opinions. In particular, some tumor patients listen to some one-sided sayings of hairy food, not only avoid eating many kinds of meat and fishy food, even many vegetables and fruits also dare not touch, almost to the point of not knowing what to eat. Medically speaking, the so-called “hairy food” is mainly related to the occurrence and development of allergic diseases or sores and toxins, and there is no evidence to prove that it is necessarily related to the recurrence and metastasis of tumor. On the contrary, certain “hairy substances” can stimulate the body to produce stimulation reaction, which can awaken the immunity of the body and promote the recovery and improvement of physiological function, and is beneficial to the prevention and treatment of tumor. For example, sea cucumber, seaweed, kelp, squid, etc. are both food and medicine commonly used in anti-cancer treatment; such as loach contains protein, fat, calcium, phosphorus, iron and many kinds of vitamins, which is good for liver protection; eel, tofu, etc. are rich in protein, which is useful food to promote the body’s recovery. Therefore, tumor patients should not be partial to the “hairy food”.