If there is a bacterial infectious disease, an antibiotic drug sensitivity test is required. The drug sensitivity test starts by taking the patient’s secretions or blood, performing a bacterial culture and identifying which bacterial infection it is, and performing a drug sensitivity test for multiple antibiotics to see which drug it is sensitive to. Therefore, it is very meaningful to do a drug sensitivity test. For a certain bacterial infection, treatment with a sensitive antibiotic can inhibit bacterial growth very quickly, and the disease is usually significantly controlled in 3-7 days to achieve the most effective treatment effect. Especially for some special bacterial infections, if the empirical medication is not effective, the results of the medication according to the drug sensitivity, the effect is the best, in a very short period of time, to be able to cure the disease.