The invention relates to a
seabed observation network node platform comprising a box body in which a photoelectricity separating device, a wiring board, a high-
voltage power supply cavity, a low-
voltage power supply cavity and
control system cavity, wherein the photoelectricity separating device is connected with a coast
base station, an
electric signal output end and an optical
signal output endof the photoelectricity separating device are correspondingly connected with the input ends of a high-
voltage wet plugging
assembly and an
optical fiber wet plugging
assembly, the output ends of the high-voltage wet plugging
assembly and the
optical fiber wet plugging assembly are respectively connected with the low-voltage power supply cavity and the
control system cavity, and the control systemcavity is in communication connection with
seabed external equipment through an external equipment wet plugging assembly; the output end of the high-voltage power supply cavity is connected with the input end of the low-voltage power supply cavity, and the output end of the low-voltage power supply cavity is connected a power source input end of the
control system cavity which is internally provided with a
communication control system for data communication with the
seabed external equipment and a power source
management system. The invention can provide continuous power energy for the seabedexternal equipment and realizes the real-time and continuous communication between the coast
base station and the seabed external equipment.