The invention provides a turbidity sensor in marine acoustics, which comprises a column cavity with sealed ends, a transducer and an opposite baffle board arranged in/out one cavity end, and a circuit box in cavity, a ling through port on another cavity end to lead out the output signal from circuit box through the port to a data treatment system by cable, and sealing material arranged between port and cable. This invention is easy to manufacture, has no limit to pressure resistance and sealing, and has simple structure with accurate detection. |