Transportation cage box for SPF (specific pathogen free)-grade laboratory mice

The invention belongs to the technical field of animal feeding management, and relates to an SPF (specific pathogen free) laboratory mouse transportation cage box, which comprises a box body, the filter plate is movably arranged in the box body, a connecting piece is arranged on the box body, the connecting end of the connecting piece is connected with the filter plate, and in the transportation process of the box body, the connecting piece can enable the filter plate to have fixing and vibration reduction effects relative to the box body; the mouse nest is fixed to the filter plate, a feeding cavity is defined in the mouse nest, through openings are formed in at least three sides of the outer wall face of the mouse nest, and the multiple through openings communicate with the feeding cavity; the first filter layer is arranged on the side wall surface of the box body, the inner cavity of the box body is communicated with the outside through the first filter layer, and an observation window is formed in the cen