The fern flora was analyzed in terms of floristic composition, distribution types and ecotypes through field investigation and consulting literature, and meanwhile similarity coefficient among the flora and other 7 floras were compared. The results showed that： (1) the flora was composed of 109 species, 47 genera and 28 families. The representative families are Dryopteridaceae, Thelypteridaceae and Athyriaceae, and the main genera are Dryopteris, Asplenium and Arachniodes. There are 14 species endemic in Ningzhen Mountain. (2) The families and genera distribution types mainly belong to tropical elements, and the species distribution type belongs to East Asia, indicating the fern flora of Ninzhen Mountain was featured with subtropics transition to temperated area. (3) Similarity coefficient of families, genera and species showed the genetic relationship of Ningzhen Mountain is intimate to Jigong Shan in Henan, and followed by Fengyang Shan in Zhejiang and Wuyi Shan in Fujian. (4) The ferns in Ningzhen Mountain range can be divided into three types: the wet, the stone and the soil, and there are 31, 8 and 70 species, respectively.