The utility model relates to a lock catch mechanism belongs to the technical field of jewel box, specifically is a kind of anti-loosening jewel box lock catch mechanism, including top cover, the bottom of top cover is provided with bottom box, and the sidewall of bottom box is fixedly installed with connecting hinge, and connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top cover, and the connecting hinge is fixedly installed on the side wall surface of top