The invention discloses a system for controlling turbid circulation cooling of a roller. The system is arranged on a hot rolling production line which comprises the roller. The system comprises a cooling fluid supply unit, a cooling fluid distribution unit, a plurality of cooling fluid spraying units and a cooling fluid recovery unit; the cooling fluid supply unit is used for storing and providing the cooling fluid; the cooling fluid distribution unit is connected with the cooling fluid supply unit and used for controlling the flow distribution of the cooling fluid; every cooling fluid spraying unit comprises a water inlet bending pipe, a circular-arc-shaped pipe body and a plurality of nozzles; every water inlet bending pipe comprises a gradient pipe, a plurality of elbows and connecting short piped; one end of every gradient pipe is communicated with the cooling fluid distribution unit and the other end of every gradient pipe is communicated with the corresponding circular-arc-shaped pipe body through the plurality of corresponding elbows which are connected with the corresponding connecting short pipe; the plurality of nozzles are arranged on the center side of the corresponding circular-arc-shaped pipe body in an arrayed mode and communicated with the corresponding circular-arc-shaped pipe body; the cooling fluid recovery unit is connected with the cooling fluid supply unit and comprises a recovery tank which is provided with a wire mesh; the recovery tank is used for recycling the cooling fluid sprayed through the cooling fluid spraying units; the oil-water separation and purification of the cooling fluid is implemented through the wire mesh.