For non-toxic Chinese medicine and treatment of major diseases such as tumors can be taken for a long time. There is no specific standard for the duration of continuous consumption of herbal medicines, which should be taken for a period ranging from 1 week to several months depending on the severity of the disease. Western medicine believes that one of the main risks of Chinese herbal medicine is liver and kidney toxicity. Chinese herbal medicine contains a large number of unknown pharmacokinetic components, which are mostly metabolized by the liver, so blood biochemistry should be checked 1-3 months after taking Chinese herbal medicine to ensure whether liver and kidney functions are impaired. For chronic diseases, those who take medicine regularly for a long period of time should decide whether to stop taking the medicine temporarily according to the duration of a course of medicine and its efficacy. Some herbal medicines are of the same origin as medicine and food, i.e. herbal medicines themselves are food, so they can be consumed regularly, while herbal medicines with high toxicity or unclear composition or carcinogenic properties, such as Aristolochia and Mucuna pruriens, are not recommended for regular consumption, especially for those with liver and kidney diseases. In addition, although herbal medicines are mild and have less toxic side effects, they should not be taken for a long time to avoid poisoning. It is recommended that the prescription be adjusted regularly under the guidance of a TCM physician according to the recovery of the disease.