The invention belongs to the technical field of
water quality detection, and particularly relates to a sampling detection device for
water quality detection, the sampling detection device comprises an unmanned aerial vehicle main body, one side of the lower end of the unmanned aerial vehicle main body is fixedly connected with a box body, one side of an inner cavity of the box body is rotatably provided with a winding and unwinding roller, and the winding and unwinding roller is wound with a
rope; a supporting wheel is arranged on one side of an inner cavity of the box body, the
rope is attached to the surface of the supporting wheel, a sampling
barrel is fixedly connected to the end of the
rope, a round through hole allowing the sampling
barrel to penetrate through is formed in one side of the lower end of the box body, and a
water quality detector is slidably connected to one side of the bottom of the inner cavity of the box body. By utilizing the water inlet auxiliary
assembly, the situations that when the sampling
barrel and the rope enter water, stems and leaves of emergent aquatic plants are wound on the sampling barrel and the rope, smooth diving of the sampling barrel is affected, a water inlet in the sampling barrel is covered, and the
water collection effect is inconvenient are avoided.