The present invention discloses a digital hydrophone. The digital hydrophone comprises a water listening sensor, a front end driving circuit, an AD conversion circuit, a micro controller and a first RS485 interface driving circuit; the input end of the front end driving circuit is connected with the output end of the water listening sensor; the output end of the front end driving circuit is connected with the input end of the micro controller through the AD conversion circuit; the first RS485 interface driving circuit is connected with the micro controller; the front end driving circuit is used for amplifying analog signals detected by the water listening sensor; and the AD conversion circuit is used for performing analog-to-digital conversion on the signals amplified by the front end driving circuit; the micro controller is used for processing the digital signals obtained through conversion of the AD conversion circuit and sending the digital signals to a monitoring platform through the first RS485 interface driving circuit. With the digital hydrophone of the invention adopted, the attenuation and interference of acoustic signals collected by the water listening sensor can be decreased, the collecting performance of the hydrophone can be improved, and the monitoring platform can receive accurate seismic sound signals.