Adjustable laboratory mouse fixing device

The utility model relates to the technical field of test instruments, in particular to an adjustable laboratory mouse fixing device. Comprising a mouse cage framework, an X-axis grille, a Z-axis grille, a Y-axis grille and a locking structure, and the outer contour of the mouse cage framework is in a cuboid shape; the X-axis grille is in sliding connection with the squirrel cage framework and is used for limiting and shrinking the space in the X-axis direction; the Z-axis grille is in sliding connection with the squirrel cage framework and is used for limiting and shrinking the space in the Z-axis direction; the X-axis grille and the Z-axis grille define a mouse cage moving space with two open ends; the Y-axis grille is used for blocking the two ends of the mouse cage moving space; and after the X-axis grille and the Z-axis grille slide to set positions relative to the squirrel cage framework, the X-axis grille and the Z-axis grille are connected with the squirrel cage framework through a locking structure. T