In the world, our country is the country with the most serious abuse of antibiotics, and antibiotics are readily available in pharmacies, and the first thing people think of is taking antibiotics whenever they are unwell. In hospitals, the most used antibiotics are also used. The first thing you should do is to take antibiotics. Hazard one: the use of large amounts of antibiotics can bring strong toxic side effects and directly harm the body, especially for children’s hearing. Research shows that each antibiotic has different degrees of harm to the human body. For example, streptomycin and kanamycin can cause vertigo, tinnitus and deafness. Gentamicin, kanamycin, vancomycin can damage the kidneys, etc. The ear is most sensitive to the side effects of antibiotics, for example, streptomycin, gentamicin and kanamycin are most likely to affect the hair cells of the ear and cause hearing loss. It was once reported on a focus interview that a child was deaf because of a shot of gentamicin, causing irreparable pain to the child for life. The most serious side effects of antibiotics are allergic reactions, and many patients lose their lives every year because of allergic reactions to antibiotics. Hazard 2: It can make bacteria resistant to the drug. When the drug acts on the bacteria, the bacteria will defend themselves, defend, and fight back, and the final result is resistance to the antibiotic, which means that resistance is developed. If we abuse antibiotics, there is a chance that one day, all the disease-causing bacteria present in the environment will be drug-resistant, and the human body will be infected with drug-resistant bacteria. Bacteria will develop drug resistance much faster than we can develop new drugs, and as a result, humans will face the threat of many infectious diseases again. For example, tuberculosis is an infectious disease caused by Mycobacterium tuberculosis. Many years ago, Mycobacterium tuberculosis was very sensitive to antibiotics and tuberculosis was very well controlled, but now there are more drug-resistant tuberculosis bacteria and it is very difficult to treat them, which not only causes an increase in human mortality, but also increases the cost of treatment and causes a serious social burden. Hazard 3: Antibiotics used too much and too indiscriminately will kill a large number of normal bacteria in the body, allowing pathogenic bacteria to take advantage of the situation, which can cause human death. For example, the human intestinal bacteria, according to a certain proportion of the combination, the bacteria between each other, interdependent, in quality and quantity to form a kind of ecological balance, long-term application of broad-spectrum antibiotics, sensitive bacteria in the intestinal tract is inhibited, the antibiotics are not sensitive to the bacteria failed to be inhibited and take advantage of the opportunity to multiply, resulting in infection. Some bacteria in the human body help digestion, some are parasitic bacteria, they exist in the skin, oropharynx, ears and eyes and other places with the outside world, they are not pathogenic bacteria, but the long-term application of broad-spectrum antibiotics will cause the body flora dysbiosis, these parasitic bacteria will become pathogenic bacteria. Once the infection is caused, it is very easy to deteriorate and can even be fatal.