本发明系关于一种复合空心板结构及其制作方法，此复合空心板结构包括一第一板体及一第二板体，第一板体的一表面成形有复数第一锥形环和复数第一套环；第二板体压接于第一板体上，第二板体的一表面成形有复数第二锥形环和复数第二套环，各第一锥形环与各第二套环相互嵌固结合，各第二锥形环与各第一套环相互嵌固结合，且各第一锥形环与各第二套环之间、各第二锥形环与各第一套环之间分别形成有一空心腔。借此，省略习知黏接或焊接方式而制成复合空心板，以提升复合空心板的耐弯折等变形量，并能够简化制程和缩短制作时间。

The present invention is related to a composite hollow plate structure and manufacturing method thereof. The composite hollow plate structure includes a first plate and a second plate, multiple first tapered rings and multiple first rings are formed at a surface of the first plate. The second plate is crimped onto the first plate. Multiple second tapered rings and multiple second rings are formed at a surface of the second plate. Each first tapered ring is embedded and fixed with each second ring, each second tapered ring is embedded and fixed with each first ring, and a hollow chamber is formed between each first tapered ring and each second ring and between each second tapered ring and each first ring. Thereby, the composite hollow plate is made without conventional bonding or welding method. Therefore, composite hollow plate bending resistances and deformation capacities are of the composite hollow plate are improved, manufacturing processes thereof is simplified, and production time consuming thereof is reduced.