| Summary: | This study reports on extensive and in-depth investigations into the morphological, photosynthetic, and physiological indices of 10 different types of <i>Cypripedium</i> plant introduced from Changbai Mountain. It is an important prerequisite for the ex situ conservation of <i>Cypripedium</i> plants to provide new insights into their photosynthesis. This result can not only promote the production of vegetative plants but also promote the production of plants with lots of flowers and the physiological characteristics of <i>Cypripedium</i> plants for promoting the artificial introduction and cultivation of wild resources. A critical comparison of the results showed that high light intensity is one of the causes of the reduction in photosynthesis in the samples. <i>Cypripedium macranthum</i> had the most morphological advantages, while <i>Cypripedium guttatum,</i> the smallest plant type, had the lowest plant morphogenesis. Photoinhibition began daily at 12:00 pm and reached a second peak at 14:00 pm in all 10 types. <i>C. macranthum</i>, <i>Cypripedium ventricosum</i>, and <i>Cypripedium calceolus</i> had greater photosynthetic capacity than the other types. Using principal component analysis, the order of photosynthetic physiological characteristics of the 10 <i>Cypripedium</i> plants was CCMY > CVPP > CCRY > CMPP > CVRR > CSPY > CMWW > CMLL > CMDD > CGWW. These results lay the groundwork for future research on <i>Cypripedium</i> resource distribution and artificial conservation.
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