Through comparing the blade profile of the original blades and high-loaded blades of the bladecascade on the turboshaft engine and analyzing the one-dimensional, two-dimensional aerodynamic parameters and the three dimensional flow fields, we can verify a higher load achievement of the high-loaded blades. By analyzing the source of the energy loss from the aspect ofthe flow principle, we propose a constructive suggestion in decreasing the secondary flow loss of high-loaded blades.%通过对涡轴发动机一列动叶片的原型叶片和高负荷叶片叶型对比以及对其一维、二维气动参数和三维流场的分析，验证了高负荷叶片能够实现更高的负荷，并从流动机理方面分析高负荷叶片能量损失的来源，对削弱高负荷叶片的二次流损失提出建设性意见。
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