For watching videos from different equipment manufacturers on the unified interface, a web video surveillance plugin is designed. According to the network configuration, the plugis connected with the video device directly. Based on integration of the APIs which are provided by different video equipment manufacturers, the plugin is compatible with video devices from different manufacturers. Based on the mechanism of ActiveX and NPAPI, the plugin interface is developed. Through the plugin in different browsers, we can watch the real-time video and the local video, download and play the remote historical video. It provides the same remote video surveillance experience for users. The plugin has been successfully applied in the wisdom of park construction project of Shandong Runxing Chemical Technology Co., Ltd.