The invention discloses a tropical fish culture monitoring system based on wireless network, which is characterized in that the system comprises a video screen monitoring device, a power supply monitoring device, an intelligent terminal and a control center. The control center receives signals sent back by the video screen monitoring device and the power supply monitoring device, and sends feedback information to the intelligent terminal. The video screen monitoring device can control the monitoring angle of view through the intelligent terminal. The power supply monitoring device is located at the power supply of the tropical fish tank. Battery WiFi equipment is used as wireless network source for power monitoring equipment. When a power failure occurs, no current passes through the powermonitoring device, and an instruction is immediately issued to the intelligent terminal. Through video monitoring and power monitoring, the invention effectively prevents possible loss due to power outage, and the video screen monitoring equipment selects night vision infrared scientific control to facilitate the better growth of tropical fishes.