In the present study, three multivariate morphometrics analyses were introduced to assess the morphological variations on meristic parameters,measurable scaling parameters and truss network scaling parameters in Parabramis pekinensis, Megalobrama amblycephala, M. terminalis (Dongjiang population and Qiantangjiang population), M. pellegrini and M. hoffmanni in China. Results were shown below: No significant variation(P>0.05)was observed on seven meristic parameters such as scale number on lateral line, scale number above lateral line, scale number beneath lateral line, soft dorsal fin (spines, rays), pectoral fin (spines, rays), pelvic fin (spines, rays), anal fin (spines, rays) among Parabramis and Megalobrama species. Based on nine measurable scaling parameters and twenty truss network scaling parameters, cluster analysis presented a relatively close relationship between M. amblycephala, M. terminalis and M. pellegrini, and these three species had relatively far relationship with the species of genus Parabramis, while they all had great morphological variation with the species M. hoffmanni. Meanwhile, certain morphological variations were detected between Dongjiang population and Qiantangjiang population of the species M. terminalis. Discriminant analysis outputted six discriminant functions with a comprehensive accuracy rate of 93.7% among the six populations of genera Parabramis and Megalobrama. The cumulative contributive proportion of two chief principal components extracted by principal component analysis was 77.9%, in which principal component 1 accounted for 70.9%. Characters that played key roles in inter-species morphological variation among Parabramis and Megalobrama concentrated mainly in the direction of dorsal-ventral axis.