The growth patterns of pod development at different growth stages in five bush bean varieties were studied. The result indicated that there were significant differences between varieties and pod characters at different growth stages. The growth patterns of pod width and pod thickness are almost similar for roundpodded varieties, but the growth rate of pod width is much rapid than that of pod thickness in flat-podded varieties. The growth duration of pod length and pod weight have shorter lag phase than that of fresh seed weight, but all follow a similar linear phase of growth curve after then. The seed development rate of dry bean variety is the fastest among varieties. There were positive correlations between pod characters at different growth stages. The result of analysis of allometric growth showed that, in general, pod length have sligthly fast growth rate than that of pod width, while pod length and pod thickness exhibit similar tendency, but the growth rate of pod length was much faster than that of seed length. The growth rate of fresh pod weight is higher than that of fresh seed weight.