Cooling rollers for cooling the film, according to one embodiment of the present invention, one end and an opening on, an internal passage connected to the opening and in the center, the roller shaft unit with the end of the internal passage is blocked; It is rotatably coupled to the other end of the roller shaft unit, which is loaded with the contact roller unit; Coupled to the internal passage of the roller shaft unit, and provided with an inlet and outlet for the cooling fluid, the inlet exhaust unit provided in the inlet passage which is connected to the internal passage; Is disposed in the internal passage of the intake passage and the roller axis of the intake unit discharge unit, is spaced from the inner wall portion of the internal passage and the inlet passage the inner pipe unit to form a double passage in the internal passage and the inlet passage; And which is inserted into one or more of the roller shaft unit and the inflow exhaust unit, comprises a fixed support unit for fixing the position of the roller shaft unit and the inflow exhaust unit. According to this embodiment of the invention, it is possible to improve the process efficiency of the film used to improve the cooling performance for the heated film at a high temperature by circulating the cooling fluid supplied to the interior of the chill roller.