本文研究了三元准周期超晶格的电子共振隧穿性质。结果表明：准周期超晶格结构的自相似性导致了电子透射率谱的自相似性；随着代数的增加，高透射率的区域越来越集中于某一小的能量范围；电子透射率较大的能量对应着电子的扩展态，电子透射率较小的能量对应着电子的局域态，电子透射率介于两者之间时，对应着电子的临界态。 In this paper, we study the electron resonance tunneling properties of ternary quasi-periodic superlattices. The results show that the self-similarity of the quasi-periodic superlattice structure leads to the self-similarity of electron transmittance spectrum. With the increase of algebra, the areas of high transmittance are more and more concentrated in a small energy range. The electron transmittance The larger energy corresponds to the extended state of the electron. The smaller energy of the electron transmissivity corresponds to the localized state of the electron. When the electron transmissivity is between the two, it corresponds to the critical state of the electron.