A lid handle having vacuum and overflow prevention function is installed in a lid for a vacuum cooking pot, the lid being locked to a container using a locking member installed in a container handle. The lid handle may have a check valve having an open-close flange, a top unit, a central hole flange, a connecting section connecting the open-close flange with the central hold flange to form a relief path, and a flange formed in between the top unit and the open-close flange. The locking member may include a locking slider, a guide member for guiding the locking slider, and an elastic clip that determines the position of the locking slider.