Abstract: The properties of reaction wood from bending and inclination stem in Liriodendron chinense× L. tulipifera was investigated by microscopic, FTIR and XRD. The results showed that in tension zone the gelatinous fiber ratio was the lowest and the number and mean diameter of vessel and tissue proportion was significant difference comparing with that in opposite and transition zone in bending stem. The IR characteristics in tension zone were similar to the opposite and transition zone. The relatively ratio of I1 505/I1 739 was higher in tension zone than other two zones and indicated that it has higher lignin content. The cellulose crystallinity in tension and transition zone was observably lower than that in opposite. On the contrary, in tension zone the gelatinous fiber ratio was higher(26.1%)and the number and mean diameter of vessel was decreased comparing to that in transition zone of inclination stem. The peaks intensity at 1 739 cm^-1 and 1 505 cm^-1 were decreased in tension zone than that in other two zones. This indicated that the hemicellulose and lignin content was lower in tension zone. The cellulose crystallinity in tension and transition zone was higher dramatically than that in opposite. All of these suggested that the properties of tension wood were affected by stem growth morphology in Liriodendron chinense×L. tulipifera.