The utility model discloses a clinical medical first-aid auxiliary device. The device comprises a cuboid box body, the interior of the box body is divided into an upper cavity and a lower cavity through a transversely-arranged partition plate. An opening communicated with the lower cavity is formed in one side wall of the box body; sliding rails which are arranged in parallel are arranged on the bottom wall in the box body. A first-aid equipment drawer is arranged in the lower cavity; the bottom of the first-aid equipment drawer is in sliding fit with the sliding rails. Drawer edges protrude outwards from the two sides of an upper opening of the first-aid equipment drawer, a plurality of sets of guide rollers are arranged at the positions, above and below the drawer edges, of the two sidesof the inner side wall of the box body, the drawer edges are located between the guide rollers arranged above and below, and guide grooves matched with the guide rollers are formed in the upper portions and the lower portions of the drawer edges. The portable medical first-aid kit is simple in structure, small in occupied space, convenient to carry and suitable for clinical medical first-aid assistance in emergency.