Abstract: In this paper, the reserach and design of ZNT-Ⅲ Solar Cooker is described. The newest design method in China is adopted for this Solar Cooker and the design method is enriched. The optimizing design is adopted for this Solar Cooker. intercepting light surface. The structure of the Solar Cooker is designed with center of gravity bearing and three point stable framework. This structure is simple and reliable. The designed adjustor is revolving type which follows the Solar azimuth and the adjustor is with a simple promoting gear rack which follows the Solar altitude. The Solar Cooker is made of the GRC material and the reflecting material is aluminizer. The product has been tested to meet the design standard and all the func tions perform well. At the end of the article there is a concise economic analysis.