In order to understand adaptability of Fraxinus chinensis,Pterocarya stenoptera and Pistacia chinensis to waterlogging,the growth status and photosynthesis of 1-year-old seedlings were investigated in a 60-day waterlogging experiment.The results showed the waterlogging resistance of the 3 species was in the order of F.chinensis＞ P.stenoptera＞ P.chinensis.F.chinensis and P.stenoptera showed perfect tolerance to waterlogging or flooding.Under the waterlogging and flooding stress,superoxide dismutase (SOD) activity,ascorbic acid-ascorbic acid peroxidase (ASA-POD) activity,ascorbic acid (ASA) content and reductant glutathione (GSH) content in the leaves or roots showed significant rise and tended to be stable.P.chinensis showed a downward trend.In summary,F.chinensis and P.stenoptera showed better ability tolerant to waterlogging or flooding than P.chinensis.