The invention relates to placing racks, in particular to a medical surgical instrument placing rack. The medical surgical instrument placing rack comprises a shell, control devices, a support, a transmission device I, rotating devices, a transmission device II and is characterized in that support rods are fixedly connected to the lower end of a shell body through welding; cylinders are connected into a circular hole I through bearings, and the cylinders are in interference fit with circular holes III and circular holes IV; rotary knobs are located on the lateral sides of the shell body; the transmission device I is located at the lower end of the shell body, and the other end of each L-shaped support rod is connected to the lower end of the shell body; a gear I meshes with a gear II; a central shaft is connected into the circular hole I through a bearing; slide rods II are in clearance fit with rectangular slots; the control devices and the rotating devices are located in control grooves; arc-shaped plates are in clearance fit with through holes. By the medical surgical instrument placing rack, more surgical instruments can be placed on the placing rack, the surgical instruments can be sterilized, and when the surgical instruments on one support plate are used, the surgical instruments on other support plates can be sealed in the shell.