音乐台阶是现代科技与音乐结合的产物，是一种新型的楼梯台阶。它在现代音乐扮演着重要的角色，单片机具有强大的控制功能和灵活的编程实现特性， 它已经溶入现代人们的生活中，成为不可替代的一部分。本文的主要内容是用 AT89c51单片机为核心控制元件，设计一个音乐台阶。以单片机作为主控核心，传感器，扬声器等模块组成核心主控制模块，在主控模块上设有传感器和扬声器。本系统运行稳定，其优点是硬件电路简单，软件功能完善，控制系统可靠， 性价比较高等，具有一定的实用和参考价值。-Music stairs is the product of the combination of modern technology and music, is a new type of stair steps. In modern music, it plays an important role, the microcontroller has a powerful control functions and flexible programming features, it has become an irreplaceable part of the integration into the life of modern people. The main content of this paper is to AT89c51 microcontroller as the core control element, the design of a musical stairs. Microcontroller as the master core, sensor, speaker modules the core main control module with sensors and speakers in the main control module. The system is stable, simple hardware circuit, software functions, reliable, cost-effective control system, has some practical and valuable reference.