Abstract: In order to detect communication abnormity caused by communication halt of network switching equipment and recover automatically,a universal communication halt detecting and recovering device of network switching equipment was designed,which used ARM microprocessor LPC1114F as CPU.First,total structure and running process was introduced,then,the main hardware circuit design and software running flow were presented in this paper.Test results indicated that device could realize detecting communication halt of network switching equipment and recovering effectively,moreover,device had good universality.