In order to reduce the labor intensity of medical staff and patients's families, and improve the self-care ability of patients. In this paper, a wireless monitoring system for a multi-function nursing bed is developed based on wifi technology. The system is mainly composed of a microcontroller STM32F103VET6, wifi wireless communication module MarveII88W8686 and a handheld terminals which based on android system and support wifi communitions. It has the function of monitoring, controlling and alarm. The system makes use of wifi wireless communitions technology and symmetric eneryption technology to complete the interaction and real-time display.The experimental results show that the system has a high reliability characteristic and low-cost hardware. It can accurate display monitor state, and is suitable for extending and enlarging in health care industry.