McMillan公式是BCS超导理论体系的重要组成部分，是预测传统超导体超导转变温度的重要公式.本文介绍了McMillan的原始公式和 Allen与Dynes 修正后的形式，并以氢基超导体为例，应用McMillan公式揭示电声子耦合强度、声子对数频率和超导转变温度的关系.超导现象和超导电性是固体物理的重要问题和前沿课题，在固体物理教学中应重视超导相关问题及其在现代物理领域中的作用.

The McMillan formula is a crucial component of BCS superconductivity theory and a vital tool for predicting the superconducting transition temperature in conventional superconductors. This paper introduces the original McMillan formula and its Allen-Dynes modified version. Using hydrogen-based superconductor as example, we apply the McMillan equation to reveal the relationships between electron-phonon coupling strength, logarithmic phonon frequency, and superconducting transition temperature. Superconductivity and its electronic properties represent significant challenges and frontier topics in solid-state physics. Teaching solid-state physics should emphasize superconductivity-related issues and their role in modern physics.