The invention relates to a manufacturing method for a stable occlusal plate in dental medical treatment and particularly relates to a method for synchronous realization of one-step lamination and the forming of an occlusal surface of a stable occlusal plate. The method comprises the following steps: firstly, taking a die; secondly, transferring a centric relation; thirdly, racking; fourthly, filling an undercut; fifthly, filling a clearance; sixthly, pressing a film; seventhly, cutting and polishing; and eighthly, finishing. According to the method disclosed by the invention, the forming of the occulusal surface is finished while one-step lamination is realized, and thus the simplicity in operation is realized; the occlusal surface is made of homogeneous resin film material and is smooth and durable; a patient feels more comfortable when wearing the stable occlusal plate for the first time, compared with a stable occusal plate manufactured by using a conventional method, and has no front-tooth extrusion and pain feeling. Through 82 cases of clinical application for three years, the stable occulusal plate is favorable in effect.