Abstract: The main structural framework of the Maoji Erlangping down faulted zone in Henan is represented by a composite overturned fold system.Its center is the Zhuzhuang （Heqianzhuang） Banshanping Taipingzhen principal anticline belt, flanked by overturned synclines on the north and south sides, i.e., the Damiao Qingshan overturned syncline and Zhangjiadazhuang overturned syncline on the south and the Shihuiyao overturned syncline and Penglaojia overturned syncline on the north. The discovery and establishment of this composite overturned fold system are of great significance for the stratigraphic division and correlation of the Erlangping Group and its related strata in the down faulted zone and exploration of marine volcanic type mineral deposits such as gold, silver, copper and sulfur deposits.