To ensure and streamline the transition from an operation mode to a static mode or a degassing mode by the selective operation of a single operating member in a container cover body for an aerosol type product or a pump type product wherein its injection port for contents is covered and protected with a slide type operating member.

A guide part of the slide type operating member 7 is constituted of a fixed front guide part 5f' for setting the static mode or the degassing mode, and a rear guide part 5f" in the shape of a cantilever wherein its front free end on the left bends downward. The operating member slides forward along the upper surface of the front guide part with the aid of biasing force of a leaf spring 8 from the backward position of the operation mode so as to automatically return to the static mode. When the operating member 7 in the operation mode is returned forward by pressing its upper surface front end with the front portion of the rear guide part bent downward, the front portion of the operating member gets into the underside of the front guide part with an injection part 6 for the contents shifted into its injection position, thereby holding the degassing mode.