Undisturbed seabed surface layer float sludge collecting device

The invention relates to the technical field of underwater sediment collection, and discloses an undisturbed seabed surface layer float sludge collection device, which solves the problem of insufficient accuracy in the surface layer sediment collection process, and comprises a fixed plate, a first telescopic rod is arranged at the bottom of the fixed plate, and an outer collection barrel is arranged below the first telescopic rod; an inner collection barrel is arranged in the outer collection barrel, a collection cabin fixing assembly is arranged in the outer collection barrel, the collection cabin fixing assembly comprises a rotating disc, a collector is arranged below the rotating disc, and a collection cabin is fixed in the collector; according to the control mechanism, the collection process is automatically controlled, so that manpower is saved, disturbance in the outer collection barrel can be reduced, and the accuracy of a collection result is improved; a plurality of collectors can enable the collecti