The ward call system consists of a call host installed at the ward nurse station, call extensions and corridor display screens respectively installed at the ward bedside and ward bathroom. Once someone presses the call button at the ward bedside or bathroom, The host computer at the nurse station sends out an audible and visual alarm signal. At the same time, the corridor display screen simultaneously displays the call bed number, so the nurses can immediately rush to the ward to handle the emergency. It is important that the call extension in the bathroom is waterproof. In addition, to facilitate the work of ward staff, communication and display devices can be installed in the treatment room so that the therapist can understand the situation in time. The ward call system is an auxiliary facility to improve hospital management and service levels. The system needs to work continuously for 24 hours, requiring a low failure rate, stable performance, and reliable quality. Currently, the domestic manufacturer "Qiaowei" brand call system is made Very nice, with static protection and lightning protection. Nowadays, the needs of hospitals with scientific and technological development are also improving. Basically, rural hospitals still use hardware-based call systems, with low functional scalability and intelligence. Most cutting-edge tertiary hospitals use multimedia call systems, which are different from those of hospitals. HIS is connected to the Internet and has a color screen display. It can display the patient's medical information and cost status, and can also expand its functions to analyze the hospital's hospitalization status, the work efficiency of medical staff and multiple diseases, etc. Through this system, a digital hospital can be built!