Tumor is called cancer in Chinese medicine, which is due to deficiency of positive energy, dysfunction of internal organs, stagnation of qi, phlegm and stagnation of toxin and formation of tangible lumps. Cancer is characterized by abnormal proliferation of internal organs, which is mainly manifested by gradual increase of lumps and uneven surface. Cancer is caused by internal deficiency, six kinds of evils and poisons, improper diet and internal injuries to seven emotions. If one’s vital energy is weak, coupled with dietary and emotional disorders, it will lead to dysfunction of internal organs and paralytic obstruction of qi stagnation, blood stasis, phlegm and turbidity, etc., and formation of lumps. Cancer belongs to the syndrome of deficiency and mixed deficiency and reality (both deficiency and reality are present in the body), and the pathological factors include stagnation of qi, phlegm, blood stasis, dampness obstruction, and accumulation of toxins. If any discomfort occurs, it is recommended to consult a doctor in time and be treated by a professional doctor after identifying the symptoms, and not to use medicine blindly by oneself.