In order to improve the safety of coal mine production and ensure the safe working of production facilities, we propose a wireless monitoring system for coal mine safety called WMS. WMS adopts Bluetooth technology as its transmission protocol according to the coal mine environment. It is designed for collecting environmental parameters of coal mine and running status parameters of important production facilities. It transmits the collected data to the upper computer via wireless network based on Bluetooth. The upper computer receives the collected data and saves them for processing and displaying. Our research shows a new way for monitoring coal mine production and it is really efficient.