The first thing that comes to mind when people talk about the benefits of recognizing Chinese medicine is that it is non-toxic and has no side effects. Some people think that Chinese medicine is not toxic and can be taken more often, but this is actually a misunderstanding. It is true that the toxicity of Chinese medicine is generally less compared to western medicine, but this is not the same as saying that there is no toxicity in Chinese medicine, let alone that there is no harm in taking more of it. In fact, there are not a few drugs that are toxic or very toxic in Chinese medicine, such as raw eucalyptus, raw Sichuan and raw herbaceous wool, horseradish, scorpion, spotted cucumber, toadstool, vermilion, sulfur, etc. A considerable number of herbal medicines such as Semen, Radix et Rhizoma and Chuan Wu must be concocted before use in order to reduce their toxicity. Some Chinese medicines have no toxic effects in common doses, but excessive doses can also produce obvious toxic effects. For example, white fruit and almond can cause fever, vomiting, diarrhea, convulsions, convulsions, tonicity of limbs, dilated pupils, weak and confused pulse, coma and other toxic phenomena after overdose. There are also a lot of adult medicines that state that they are to be used with caution by pregnant women, prohibited by pregnant women, and used with caution by the elderly and infirm, etc. Therefore, Chinese medicine should not be used indiscriminately to avoid adverse consequences. It is a medicine with three points of poison, in terms of dosage, concoction, combination, evidence-based treatment and other aspects of the correct method, the party can turn the danger into a bargain. Medication is a “double-edged sword”, reasonable use of medication can improve the efficacy of the disease, but inappropriate use of medication may cause the patient to suffer from the toxic side effects of drugs. Some Chinese medicines can be decocted for a long time to remove toxicity. Experts say this can be summarized in four ways. One is that herbal concoctions can remove or reduce toxicity. The method of preparation of herbal medicines includes sun-drying, baking, soaking and various decoction times and fires, etc. Different methods of preparation will have different medicinal properties and are also designed to reduce toxicity. 52 kinds of cancer-promoting plants, including croton, king of the family and bitter almond, are like this. The information has long pointed out that only croton oil is a cancer-promoting agent, and a cancer-promoting ingredient has been isolated from it. However, the actual use of croton is to make croton cream for use by repeatedly removing the oil from croton and then drying it and making it into a powder. The tips and skins of bitter almonds contain hydrocyanic acid as a toxic component, so the bitter almonds used in medicine are peeled and peeled. The decoction has a special requirement of long decoction, and needs to be boiled for 3-4 hours to remove the poison before it can be taken. Secondly, the reasonable combination of formula can inhibit toxicity. Combination, refers to the selective use of more than two drugs, reasonable combination, can enhance the effectiveness of drugs, reduce drug toxicity, and vice versa, reduce the effectiveness of drugs or even increase toxicity. For example, half a summer is toxic, but with licorice, it is non-toxic. Experimental evidence: licorice extract has an inhibitory effect on mutagenic carcinogens a benzopyrene, naphthylamine, and the mutagenicity of ethanol extract of rhubarb and senna. The literature of Chinese medicine suggests that licorice harmonizes all medicines and has detoxifying effect. Therefore, more than 80% of traditional Chinese medicine prescriptions contain licorice. Third, the dosage is controlled to avoid toxicity. The State Ministry of Health and the State Administration of Medicine stipulated as early as 1979 that there are strict restrictions on the application of poisons in modern Chinese herbal medicines, among which raw croton, raw wolfsbane and raw gansui are on the list. For example, the amount of raw gansui is only 0.5 to 1.5 grams per dose, and the amount of mandrake is 0.3-0.6 grams. Toxic drugs, controlled within a certain amount will not be a problem. Moreover, many toxic drugs are rarely used now. For example, 52 kinds of croton, Gansui, Wuhua, wolfsbane, mandrake, safflower macrophyllum, etc., are now hard to find in the prescriptions prescribed by doctors. The fourth is to use poison to attack cancer-promoting plants to treat pain. Modern medicine has used mustard gas (nitrogen mustard) smelt cancer, with arsenic for leukemia, which is no longer news. But the available information also shows that all anti-pain drugs have teratogenic and genetic mutagenic effects on a variety of experimental animals. For example, arsenic can cure cancer, but its arsenic-like compounds may cause skin cancer, bronchial cancer, and lung cancer with long-term use. Whether a drug can cause cancer or not also depends on the genetic predisposition of the animal, the way of administration, dosage, accompanying lesions, nutrition of the muscle; whether there is a follow-up of cancer-promoting substances, etc. It is not the case that cancer will be caused upon exposure, and the complex relationship between these factors and the drug is to be grasped by the doctor. It is up to the doctor to grasp the complex relationship between these factors and the drugs. The treatment will bring out the beneficial side of the drug and suppress its toxic side as much as possible. Just like there are always various cancer-causing factors in the natural environment, but not in human beings, there is no need to be afraid of talking about cancer.