To provide a forming roll designed to control its dewatering capacity to forming roll side through altering its surface structure.

This forming roll is such one as to be set up on a paper machine and have a rotatable roll cell 26, wherein the roll cell 26 comprises an inside cell 37 with a 1st suction hole 65 and an outside cell 39 movably attached onto the outer circumference of the inside cell 37 and having a 2nd suction hole 66, and the suction resistance of the water sucked via the 1st hole 65 is made variable by moving the outside cell 39 relatively to the inside cell 37.