The invention provides a container sealing cover, which comprises an upper cover body and a lower cover body, wherein the edge of the upper cover body is provided with a downward-extending halberd edge; the edge of the lower cover body is provided with an upward-extending halberd edge; the downward-extending halberd edge of the upper cover body is sleeved on the outer side of the halberd edge of the lower cover body; the halberd edge of the lower cover body is provided with an annular groove; a sealing gum ring is sleeved on the annular groove and the upward-extending halberd edge; the upper end face of the upper cover body is provided with a groove; the side wall of the groove is provided with a guide groove; the bottom part of the groove is symmetrically provided with two through holes;a pull rod is arranged in each through hole; the upper part of the pull rod is movably connected with a switch handle, and the lower part of the pull rod is provided with a lug; the side wall of the switch handle is provided with a small protruding column; the small protruding column is connected with the guide groove in a matched mode and can slide; the upper end face of the lower cover body is provided with two lugs, and a neck is formed in each lug; and a lug on the lower part of the pull rod is buckled in the neck. The container sealing cover has a compact structure and a reliable sealingeffect, is easy to open and close, is convenient to use, cannot be damaged easily, and can effectively reduce the using cost.