Aiming at mastering WNS monitoring status, controlling node devices in wireless sensor network, a WSN location monitoring terminal system is proposed. Using B/S website architecture, the real time response, the serial communication, the data storage realization mechanism and so on is studied on. A data server to storage WSN monitoring messages and an ASP.NET sever to run sever program correlated is established at the control center. According to the WSN location monitoring terminal system, the function of serial initialization, location monitoring messages displaying, node parameters configuring, user information and network information management can be realized. Experimental results show that the WSN location monitoring terminal system has a good real time, stability and accuracy performance, which can be extended to different WSN application fields.