本文介绍为住宅小区的典型污水处理系统配置的一种自控装置。它由触摸屏和PLC等元件组成，取代传统的继电接触器控制装置。具有简单，方便，可靠等特点。文章在简述小型污水处理系统的基础上，论述了该自控装置的结构及工作原理。着重介绍F940WGOT触摸屏的画面制作功能，应用及设计时注意事项。关键词 污水处理 控制装置 触摸屏 PLCThe develop of automatic control device applied to the small sewage treatment systemXukexin Wangfangqing (University of Shanghai for Science and Technology) Abstract The paper introduces a kind of automatic control system applied to the typical sewage treatment system of the housing district. It includes GOT 、PLC and other devices.This system replaces traditional relay control system. And it’s characteristics are simple, convenient and reliability. The article is simply describing the small-scale sewage disposal system,and expounding this device’s structure and operation principle. Introduce the function producing menu of F940WGOT and some matters needing attention when designing menu emphatically.Key words sewage treatment control device GOT PLC