As the saying goes, “medicine is better than food”, which means that as long as you pay attention to diet and living, proper physical exercise, and maintain a good psychological state, there is no need to overemphasize medication. Drugs can have certain toxicity or side effects. Many antimicrobials, if improperly selected, insufficient dose, too short a course of treatment, can often make the pathogenic microorganisms produce resistance, so that the effectiveness of the drug is reduced or lose efficacy. Even cause the spread of drug-resistant bacteria, but also make other people get sick after the treatment of the difficulties. You should not abuse drugs before the correct diagnosis of the disease, not only can not cure the disease, but also cover up the real condition, affecting the doctor’s judgment. For example, the misuse of antipyretic drugs for infectious diseases and painkillers for appendicitis or ectopic pregnancy can easily lead to misdiagnosis and misdiagnosis by medical personnel, resulting in serious consequences. Many tissues and organs of infants and children are not well developed, so medication needs to be administered with special care. Commercially available medications should not be given to infants and children at will. Some drugs may cause serious ototoxicity, such as streptomycin and kanamycin. Elderly people have degenerative changes in the tissue structure and physiological functions of various organs, and liver and kidney functions need to be monitored during drug administration. Pregnant women are sensitive to certain drugs, and some drugs such as quinine can cause miscarriage. Some have teratogenic effects on the fetus. Therefore, we should not abuse drugs at will.