Aiming at the problems of curving of flat structure tags ,the influence of arc curving and vertical folding on the per-formance of a flexible tag antenna and the impacts on the RFID system reading range were studied .Firstly ,the development of the flexible tag antenna was reviewed .Secondly ,the key factors of the RFID system reading range were analyzed .Thirdly , modeling methods were elaborated by using the geometric sketch .The change of the impedance ,the gain and the radio efficiency were studied based on the HFSS .Finally ,the measurement of the RFID system reading range was carried out to verify the simu-lation results .T he research method is proved to be reliable .%针对平面结构标签在使用过程中经常发生弯曲形变的问题，研究一种柔性标签发生圆弧形弯曲和垂直折叠形变时天线性能的变化以及对RFID系统识读距离的影响。介绍柔性标签天线的研究现状，分析影响RFID系统识读距离的关键因素，通过示意图阐述弯曲天线模型的建模方法，基于HFSS仿真分析阻抗、增益和辐射效率等的变化规律。通过实际测量验证了RFID系统识读距离的仿真结果及该方法的可行性。
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