The elderly have reduced internal organ function and suffer from more diseases, so the use of drugs has increased accordingly. But the use of drugs should be scientific and reasonable, just right, in order to get rid of disease and benefit life, otherwise it will bring damage to the body. According to the characteristics of the elderly, the following principles should be considered when using drugs: 1. choose the right dose. Because the elderly liver and kidney function decreases, the ability to metabolize drugs decreases, and the excretion of the kidneys is also slower, so the dose of drugs for the elderly should be reduced compared to young adults. 2, consider the side effects of drugs. The elderly have been using drugs for a long time, and most of the diseases are chronic and require long-term treatment, such as hypertension, coronary heart disease and diabetes. The side effects of long-term drug use in the elderly are 5 to 7 times higher than in young people, and the longer the drug use, the greater the side effects. Therefore, the elderly is a high incidence of adverse drug reactions, in the process of medication, should pay attention to observation, such as the emergence of certain abnormal symptoms, should promptly stop the drug. Long-term use of large amounts of drugs should be avoided in order to avoid accumulation of poisoning. 3, the choice of drug action time. Elderly people should choose long-acting drugs due to memory loss, reduce the number of doses and increase the compliance of medication. 4.Appropriate use of Chinese medicine. According to the physiological characteristics of the elderly with declining metabolism and slow response, it is better to combine Chinese and Western medicine for the elderly. The occurrence of geriatric diseases is mostly based on the weakness of the body and its ability to resist diseases, on the basis of which evil qi such as blood stasis and phlegm and turbidity are generated, resulting in the imbalance of qi and yin and yang in the internal organs of the body, the mixture of deficiency and reality, the intermingling of cold and heat, and the appearance of several internal organs, forming an intricate and complex feature of geriatric diseases. At this time, it is more appropriate to carry out dialectical treatment and conditioning of traditional Chinese medicine to improve the physique and treat the disease. 5, the elderly medication individual differences. Therefore, the research on the individualization of medication for the elderly is particularly important. 6.Medication for the elderly should be under the guidance of a doctor. According to the above characteristics, medication for the elderly must be clearly diagnosed by a doctor to prescribe the right medicine. First of all, the pros and cons should be weighed to determine whether medication is needed. Many diseases can be cured with reasonable living arrangements, diet and exercise, but the elderly should not take medication at any time and should eliminate the bad psychology of complete dependence on drugs. For example, hyperlipidemia patients, the first choice is to adjust the structure of the diet, improve lifestyle, rather than immediately take drugs.