s: The characteristics of paleokarst development and the restoration of paleomorphology are important for preventing and controlling karst water damage in the North China Coalfield. This study focuses on the paleokarst of the Ordovician system in Shungeng Mountain, Huainan area, which is located at the southern edge of the North China plate. The characteristics of paleokarst development and the bedrock is undulating were revealed by field geological surveys, sectional profiling and residual thickness methods. Based on modern karst theory, the spatial variation patterns of different karst zones were analyzed from the perspective of their formation conditions, and the paleokarst landforms were restored. The results show that the Majiagou Formation has mainly large karst channels and holes with little internal filling, while the Xiaoxian Formation has mostly interlayer karst along the level, filled with karst breccias. The internal filling calcite increases from east to west. The Ordovician palaeokarsts in the Shungeng Mountains weaken gradually from east to west and from top to bottom. The Ordovician paleomorphology of the area is higher in the east and lower in the west and can be divided into four three-level karst geomorphic units: residual hills, gentle slopes, steep slopes and depressions. The paleokarst landscape from top to bottom was classified into superficial karst zone, vertical seepage zone, horizontal submerged flow zone and deep slow flow zone from shallow to deep, based on the karst geological conditions, groundwater runoff patterns and karst development characteristics. The superficial karst zones and vertical seepage zones of the residual hills and gentle slopes are the most developed, and large karst fissures often occur between the sedimentary layers, which may cause karst collapses when the groundwater flow changes.