The utility model discloses a be used for turbidimetric mounting bracket of OBS, including a plurality of branches, upper plate, lower plate, apron and connecting rod, upper plate and lower plate set up relatively, and the connecting rod sets up respectively in upper plate and lower plate in the heart, and the both ends of connecting rod are salient in the surface of upper plate and the surface of lower plate respectively, and the both ends of connecting rod are provided with the connecting hole respectively, and upper plate and lower plate are connected respectively to the both ends of branch, be provided with a plurality of first round holes on the upper plate, be provided with a plurality of second round holes on the lower plate, the apron is fixed on the lower plate through the fastener, is provided with the mating holes that the connecting rod passed on the apron. When the OBS turbidimeter sets up on first round hole and second round hole to through the apron, and the enhancement of the block tongue on the first round hole is fixed, effectively prevents the landing of OBS turbidimeter.