The invention discloses a mobile fixing device for medical equipment. The mobile fixing device comprises a supporting plate, fixing plates, an air pump and a shell. The top of the supporting plate issymmetrically provided with the fixing plates, the middles of the fixing plates are connected with adjustment bolts in a penetrated manner, the ends, located on the inner sides of the fixing plates, of the adjustment bolts are both connected with fixing blocks, and the ends, away from the fixing blocks, of the adjustment bolts are both provided with first adjustment nuts. The two sides of the topof the shell are symmetrically provided with sleeves, the sleeves are both internally provided with pistons, the tops of the pistons are both connected with piston rods, and the ends, away from the pistons, of the piston rods both penetrate through the tops of the sleeves and are connected with the bottom of the supporting plate. One side edge of the shell is provided with the air pump, the bottomof the air pump is connected with a supporting seat, one side edge of the supporting seat is connected with the bottom end of one side edge of the shell, and the top of the air pump is provided witha pressing rod.