Abstract: A slow cooker with fastening mechanism includes a housing, handles on the side wall of the housing, and a lid, wherein a movable fastening mechanism is provided on the upper side of the lid, and each of the handles is hinged to a clamping hook and corresponds to the movable fastening mechanism, so that the clamping hook can interact with the movable fastening mechanism. The inner pot can be closed tightly by the action of the clamping hook. With two compressing parts provided on the clamping hook and the dismountable sealing ring around the lid rim, the inner pot can be closed tightly by the lid. The lid handle is fixed onto the lid via threaded connection with sealing plugs in the connection sites.