This study uses non-radial DEA methodology under natural and managerial disposability based on the corporate strategy to measure the degree of RTS (returns to scale) and DTS (damages to scale) of 16 listed banks in China during the period of 2006-2012.The measurement results show that PingAn bank, HuaXia bank and GuangDa bank can improve their operational performance through increasing inputs scale, ZhongXin bank, Pufa bank and state-owned banks can improve their operational performance through downsizing their inputs or improving their management level, and the improvement of management level is optimal strategy of other joint-stock listed banks which can be adopted to improve their operational performance. NanJing bank, BeiJing bank, NingBo bank and PingAn bank can increase their inputs while maintain relative higher risk performance, other listed banks can improve their risk performance by means of decreasing their inputs or improving their management level. On the whole, there exist excessive inputs which not only retard the improvement of operational performance but also suppress the amelioration of risk performance of state-owned listed banks in China.