Rectal cancer belongs to the category of “intestinal mushrooms” and “lock-anal hemorrhoids” in Chinese medicine. Ganoderma lucidum cannot cure rectal cancer, but it can alleviate the clinical symptoms of rectal cancer patients, such as shortness of breath, lack of appetite, etc. Ganoderma lucidum can be used as an adjunctive medicine with other medicines. Besides, once rectal cancer is diagnosed, it should be operated as early as possible, and traditional Chinese medicine can be used as an auxiliary treatment. Ganoderma lucidum has the efficacy of tonifying qi and tranquilizing the mind, relieving cough and asthma, and is used in the treatment of restlessness, insomnia and palpitation, cough and asthma due to lung deficiency, shortness of breath due to fatigue, and inability to think of food and drink. The adverse reactions and contraindications of this product are not clear. After the discomfort should be promptly consult a doctor, under the guidance of the physician’s diagnosis and choose the appropriate treatment, so as to avoid delays in the condition.