In recent years, the clinical application of Chinese medicine is becoming more and more widespread and favored by more and more patients. In fact, many Chinese medicines, like some western medicines, have curative effects on the one hand, but on the other hand, they also have certain adverse reactions, which can also harm the body if they are not used properly. At present, there are many reports about the adverse reactions of Chinese medicine, which can be broadly classified into toxic side effects, allergic reactions and carcinogenic effects. The main reasons for these reactions are: 1. Overdose, some doctors casually increase the prescription and dose of Chinese medicine, while some patients do not follow the medical advice and overdose Chinese medicine on their own. 2. 2. Blind superstition, some patients have excessive superstition in secret prescriptions, partial prescriptions and single prescriptions, and casually abuse Chinese medicine. 3. Physical differences, such as old, young, weak and pregnant women are prone to poisoning, while allergic people will have allergic reactions. In conclusion, as the clinical application of Chinese medicine expands, we should be very cautious in using Chinese medicine and correctly grasp its indications, dosage and usage, and should not abuse it. The carcinogenic effect of Chinese medicine: In recent years, studies have shown that some Chinese medicines have the risk of causing tumors. For example, betel nut contains betel nut alkaloids, the flower contains double thick clozarine alkaloids, and white celandine contains benzophenanthridine alkaloids, and these alkaloids can induce skin cancer and lung cancer. In Taiwan and Changde, Hunan Province, China, the incidence of oral cancer is high, and studies have shown that this is related to the long-term chewing of betel nut in the region. The volatile oil of cinnamon, cinnamon bark, earth thorn, calamus, star anise, fennel, nutmeg, pungent, pepper and pepper may induce liver cancer and esophageal cancer when taken for a long time or in excess. In addition, Chinese herbal medicines, such as millipedium, dafengcao, bee’s head cress, nongjili, purple flowering eggplant, malt, green mullein, aristoloch, vermilion lotus, mucuna pruriens, triple tube, saltpeter and horehound, can induce liver cancer. Allergic reactions to Chinese medicines: Various allergic reactions to Chinese medicines have been reported repeatedly, and there are more than 40 kinds of common allergic Chinese medicines. For example, Andrographis paniculata, Rhubarb, Phellodendron, Junzi, Tiger Balm, Nansha Ginseng, Croton, etc., mainly cause urticaria, drug rash, exfoliative dermatitis and allergic purpura. Chinese herbs such as Banlangen, Jinyinhua, Andrographis, and Angelica can cause anaphylactic shock. Some herbal injections and Andrographis paniculata injection, Chai Hu injection, Banlangen injection, Huanglian injection, Fishoil injection, Verbascum injection and Dilong injection can also cause anaphylactic shock and must be noted in clinical use. Toxic side effects of Chinese medicines: For example, Chinese medicines such as Haoxiang Hua, Cinnamon, Radix et Rhizoma, Radix et Rhizoma, Shangluo, Bai Guo, Almond and Peach kernel can cause whistling system reactions such as dyspnea, pulmonary edema and whistling failure. Chinese herbs such as Bei Wu Jia Pi, Luo Bu Ma, Fu Shou Cao, Radix et Rhizoma, Chuan Wu, Cao Wu, Artemisia on Snow, Yang Jin Hua, Toadstool and Cang Er Zi can cause circulatory system reactions such as palpitation and chest tightness, hypotension, cardiac arrhythmia and even shock. Bitter almond, croton, betel nut, sweet sophora, coriander, dahurian, toadflax, broad bean root, northern bean root, mugwort, hollyhock, neem, yellow medicinal seed, celosia, petunia, helianth bark, zedoary, nutmeg, cloves, thyme, lei gong vine, rhubarb, mulberry, semen, smallpox powder, ricinus communis, cattail, etc., can cause nausea and vomiting, abdominal distension, abdominal pain and diarrhea, jaundice and liver function damage and other digestive system reactions. reactions. Mouton, cinnamon, millennium health, earth maiden, spotted wolf, fish guts, smallpox powder, cranberry, leigong vine and castor bean can cause urinary system reactions such as abnormal urination, painful urination and back pain, swelling and kidney function damage, and even kidney function failure. Chinese herbal medicines such as Chuan Wu, Cao Wu, Firenze, Almond, Bitter Ginseng, Yan Hu Suo, Hou Pu, Hsian, Safflower, Bai Guo, Lei Gong Vine, Ma Qian Zi, Yi Mu Cao, Neem Root Bark, etc. can cause neurological reactions such as numbness of mouth and lips, pain in limbs, dizziness, irritability, convulsions, convulsions, drowsiness, confusion and even coma. In addition, some proprietary Chinese medicines: such as Baiyu Pill, Zhou Che Pill, Vermilion Pill (containing vermilion, red rose, mercury and light powder ingredients) can cause mercury poisoning, Asthma Pill, Ru Yi Dan (containing arsenic and Xiong Huang) can cause arsenic poisoning, San Huang Bao Wax Pill, Mitra Sin, Huang Dan, Lead Dan, Black Tin Dan, etc. can cause lead poisoning. In addition, at present, in addition to the public ignore some of the adverse effects of Chinese medicine, there is a point worth noting, that is, over-exaggerated or over-fetishized Chinese medicine. It is undeniable that Chinese medicine has made important contributions to the health of Chinese residents for thousands of years, and its theory has become a system of its own. However, many diseases should be treated scientifically and objectively, and the best time for treatment should not be delayed because of superstitious belief in TCM.