The invention discloses an encasement mechanism with a push board module. The encasement mechanism with the push board module comprises a bottom board, a first movable support board module arranged on the bottom board in a sliding mode, a second movable support board module arranged on the first movable support board module in a sliding mode, a pushing module fixedly arranged on the first movable support board module, the push board module matched with the pushing module for use, a layer board module and a guide board module, wherein the layer board module and the guide board module are arranged on the second movable support board module; the push board module comprises a push board, a push board air cylinder fixedly arranged on the push board, a push board double-rod air cylinder with an air cylinder shaft at one end connected with an air cylinder shaft of the push board air cylinder through an air cylinder extending rod, and an extending push board connected with an air cylinder shaft at the other end of the push board double-rod air cylinder. According to the encasement mechanism with the push board module, the push board air cylinder and the push board double-rod air cylinder are arranged, and the extending push board can adapt to different products to extend by a corresponding length relative to the push board under the effect of the push board air cylinder and the push board double-rod air cylinder.