Aiming at the problem that the environmental regulatory authorities have difficulty in obtaining evidence from the excessive emissions of pollutant discharge enterprises, this study proposes a new method of online remote video forensics system of environmental protection. The method enables the environmental protection departments to remotely monitor the pollution discharge of polluting enterprises in real time and obtain evidence from history videos by means of streaming media distribution technology, XML-RPC protocol authentication technology, as well as the audio and video flow optimization technique in the ADSL network environment. The web video controls developed in this project combined with the pollution sources online monitoring system form a comprehensive online remote video forensics system of environmental protection. Thus, a convenient platform is provided for environmental protection and supervision departments to better regulate those pollution-discharge enterprises and execute forensics.