Abstract: In order to realize the remote monitoring for coal preparation plant automation system of inspection,a remote monitoring system based on wireless sensor data acquisition and Web monitoring system has been designed.By B/S architecture,while taking advantage of.NET2008 technology,the Web applications based on asp.net 2.0 has been developed.Through the Web server,data resource sharing of distributed database can be achieved.Client,only need to simply configure the browser,can achieve multi-user application service through wan or remote Internet nets,which can remotely monitor and control coal preparation plant.