The utility model discloses a test tube device that microbial cultivation used, comprising a base plate, the one end of bottom plate is inserted and is equipped with the lead screw, the one end that the lead screw is close to the bottom plate articulates the inner chamber bottom at the bottom plate, the one end fixedly connected with butterfly turn -knob of bottom plate is kept away from to the lead screw, four first supports of the upper end fixedly connected with rectangular distribution of bottom plate, four all articulated on the first support have first connecting rod, every the one end that first support was kept away from to first connecting rod all articulates another first support, another one side fixedly connected with that first connecting rod was kept away from to first support revolves the frame. The utility model discloses novel structure, easy operation utilizes the cooperation of lead screw and slider to realize test tube picture peg staggering fast on the bottom plate, utilizes the cooperation of riser and regulating plate to realize the altitude mixture control of test tube picture peg, and then has satisfied the test tube of multiple different models, and the design of protractor can let inclination angle adjustment more accurate.