The invention discloses a mould water-transporting structure which comprises a circular water-transporting hole, wherein a plurality of U-shaped slots are uniformly arranged along the circumference of the circular water-transporting hole, so as to form a petal-shaped water-transporting hole. Compared with the prior art, the mould water-transporting structure has the advantages that the excellent mobility of fluid in the water-transporting hole is maintained by the petal-shaped water-transporting hole, the flow of a liquid medium is changed into turbulent flow from laminar flow and the heat transfer mode is changed into a heat conduction and heat convection mixed heat transfer mode from a single heat convection heat transfer mode between layers, so that the heating/cooling cycle efficiency of a mould is boosted, the quality of an injection-molded product is promoted, the molding period is shortened and the production efficiency is efficiently increased.