The automatic control is an important part of the pneumatic conveying system. It ensures the safe and reliable operation of the conveying system. In this paper,a designed instance of automatic control system for pneumatic conveying group is given, and the design method of control system , the hardware component and software realization methods of the control system is specified. By using the new distributed control system, the process can run automatically, safely and smoothly.%自动化控制是气力输送系统的重要组成部分，其保证了输送系统的安全可靠运行。本文给出一种输送自动化控制的程序设计实例，阐述气力输送控制系统、硬件组成、程序设计的方法，保证系统的安全、稳定运行。
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