Abstract: A Recombinant Inbred (RI) population derived from the cross of Asominori (Japonica)xIR24 (Indica), grown in Japan and China, were employed to detect Quantitative Trait Loci (QTLs) for seven morphological traits, viz., Flag-Leaf Length (FLL), width (FLW) and area (FLA), the Second Leaf Length (SLL), width (SLW) and area (SLA), Plant Height (PH), which mainly represent morphological characteristics of rice plants. Resultantly, approximately normal distributions and transgressive segregations of seven traits studied were observed, showing that all of these traits were quantitatively inherited and there existed positive correlations among them. Furthermore, a total of 29 QTLs associated with seven morphological traits were detected, which were mainly distributed on chromosome 1 (11 QTLs), 5 (5 QTLs) and 6 (5 QTLs). Among them, only 4 QTLs (qSLL-1 for SLL, qFLA-5 for FLA and both qPH-1 and qPH-2 for PH) were commonly expressed in two countries and QTL number varied with growth environment. Those results of this study will supply useful information for improving morphology of rice plants in Asian countries.