Device for underwater in-situ biological monitoring by using multiple organisms and monitoring method

The invention discloses a device for underwater in-situ biological monitoring by using multiple organisms and a monitoring method. The monitoring device is connected through a cable and put into water, the other end of the cable is connected with a computer terminal; the monitoring device comprises a main processor, a protector, an underwater camera I, an underwater camera II, an underwater camera III, a water quality detection device, a physical and chemical monitoring device and a sedimentation device; a computer terminal display is provided with at least three split display interfaces for carrying out remote automatic real-time biological monitoring on information collected by the three underwater cameras; the computer terminal is provided with two alarm indication devices for feeding back the information collected by the water quality detection device and the physical and chemical monitoring device; the main processor can realize information collecting and processing and wireless signal conduction process