中文摘要：

简并性是系统内不同结构的元素具有相同功能或产生相同输出的能力，在元素缺失或破坏的情况下其仍能保持生物功能完整，在生物生存与进化中发挥着重要的作用。目前，简并性在电子系统仿生设计研究中也逐渐得到广泛重视。为使研究人员了解简并性及在电子仿生中的应用，概括了生物系统中的简并性现象及原理，阐述了生物简并性与复杂性、进化性、鲁棒性之间的联系，介绍了简并性在电子系统仿生领域的研究现状。最后讨论了简并性在数字电路鲁棒性设计中的发展趋势。

英文摘要：

Degeneracy, the ability of elements that are structurally different to perform the same function or yield the same output, can still maintain the biological fully function when elements is in case of loss or damage. It plays an important role in survival and evolution of biology. Nowadays, the study of degeneracy in electronic systems bionics design is received widely attention. With the purpose of researchers understanding degeneracy and application in electronic bionic, generalize the phenomenon and principle of degeneracy in biological system, expound the relationship between biological degeneracy and complexity, evolution, robustness, introduce the research status of degeneracy in the fields of electronic systems bionics. Finally, the future development trend of the degeneracy in the robust of digital circuit design is discussed.