The invention discloses a fishing boat track automatic recording instrument. When a fish boat leaves a port, an onboard terminal has communication with a port base station to confirm sea information and performs sortie registration, when the fish boat is at sea, the onboard terminal continuously collects navigation track information through a global position system (GPS) acquisition module, the navigation track information is continuously stored into an information storing device, when the fish boat is back to the port and enters into a port base station signal coverage area, a communication connection between the onboard terminal and the base station is established, a port entering confirmation is performed, outline track information of the navigation is firstly downloaded to the base station, and then whole information is downloaded according to instructions of the port base station. According to the fishing boat track automatic recording instrument, the navigation tracks are continuously recorded by a storage mode, the whole information is downloaded after the fish boat is back to the port, and thereby the problems of the acquisition and usage of long-distance navigation tracks are solved. The fishing boat track automatic recording instrument is powered by small power lithium batteries, the fishing boat track automatic recording instrument is charged by solar batteries, the instrument is not restricted by marine electricity, the full-time recording is achieved, and human factor interference is avoided.