Because of the harsh environment of the scene of the accidents, the rescue workers are the only persons who are able to enter it. So the commanders outside are difficult to make the rescue plan timely. If the rescue workers use a wireless image detection system to transmit live video of the scene, the commanders could see the situation and quickly make the appropriate rescue plan. It not only effectively saves the rescue time but also greatly improves rescue capabilities. The system can transmit video signals over wireless network. Both transmitting and receiving devices have four channels to choose. Both receiving and display system are handheld or vehiclemounted, and they can be installed in the command car. The transmitting device is batterypowered. There are also optional lighting and temperature, humidity or smoke sensors, particularly, can be used for detection in smoke and dark environments.