Water is precious resources for industrial and agricultural production. It is necessary to accurately measure the water flow. And, the accuracy of flow measurement is very critical to avoid safety accidents in some industrial productions. The sound alarm for flow measurement and control water flow was designed. Many sensors and buzzers were used in the design system. Through the water flow control modeling and simulation, the adaptive control threshold could be set according to different parameters of the system, make the system not only carries out fuzzy automatic control, and also uses cloud platform remote control. When a parameter was abnormal, it could send out an audible alarm, and the user could monitor remotely through the mobile terminal. The design could be applied not only to large-scale industrial production, agricultural irrigation, but also to small household control fields.