A door latch assembly for use in a microwave oven comprises a latch pawl secured to the inside of the door, a revolving plate having integrally molded therewith a push projection, a hook-shaped projection having a stop surface formed thereon, a projected bar and a U-shaped spring support member having a panel spring positioned longitudinally therein. The stop surface of the hook-shaped projection prevents further rotation of the revolving plate by abutting the surface of the spring support member.