The utility model discloses an open -air bacterial is collected and is cultivateed simple and easy device, including the box body, the lid that is connected with the back wall of box body to and the bacterial save set of setting between lid and box body, bacterial save set swing joint is on the back wall of box body, one side of the inner wall of lid is equipped with a plurality of tool bags that are used for placing bacterial collection instrument, and the opposite side of the inner wall of lid is equipped with first elastic cord, it puts the thing groove in order to separate into the box body two to be equipped with a baffle in the box body, be equipped with a mini exhaust fan on the back wall of box body, the bacterial save set includes the main part board, the back tip of main part board and the back wall swing joint of box body, and the middle part of main part board is equipped with the bacterial and preserves the groove, and the upper surface subsides of main part board are equipped with the barrier film, the barrier film is equipped with the bleeder vent preserving the position that the groove corresponds with the bacterial. The utility model discloses can satisfy collection, save and the disinfection of open -air bacterial. And its is small, portable.