Preparation method of bacterial liquid for drug sensitive test

The invention provides a preparation method of a bacterial liquid for a drug sensitive test. The method comprises the following steps: selecting bacterial colonies of a sample for preparing the bacterial liquid; preparing the bacterial colony into a first bacterial liquid, and counting the number of bacteria in the first bacterial liquid to obtain the number of first bacteria in the first bacterial liquid; deducing the first concentration of the first bacterial liquid according to the number of the first bacteria, diluting the first bacterial liquid according to the first concentration to obtain a second bacterial liquid, and the second concentration of the second bacterial liquid is 105-106 bacteria/ml (cfu/mL); the second bacterial liquid is the bacterial liquid for the drug sensitivity test. A counting method is ingeniously applied to preparation of the bacterial liquid for the drug sensitive test, the time for preparing the bacterial liquid is greatly shortened, the concentration of a sample adopted in th