The utility model is suitable for the field of storage medium processing. The utility model provides a destroying device for an information storage medium. The device is provided with a shape destroying bracket with a shape destroying knife edge and a shape destroying knife, the hydraulic driving device drives the destroying cutter to move downwards to the destroying cutter edge to bend a medium placed in the destroying cutter edge to fulfill the aim of destroying; different from other devices which are destroyed through direct crushing, material recycling can be achieved to the maximum extentafter bending, it is avoided that after crushing, different parts are mixed together and difficult to separate, and the device can be bent to destroy hard disks and can also be used for destroying electronic products such as CD drivers, mobile phones and tablet personal computers. A positioning baffle is arranged on the back surface of the device to facilitate positioning of a placed medium and avoid bending position deviation.