A web cutting device comprising: a plurality of pads (12p to 12y) that move in a circumferential direction along a cylindrical movement path and hold a web in a releasable manner; a plurality of anvils (14p to 14y) that are arranged between the pads (12p to 12y) adjacent to each other and that move in the circumferential direction together with the pads (12p to 12y); a member that is arranged, with an interval in between, opposite to the web moved in a state of being held by the pads (12p to 12y); a cutter that is held by the member, characterized in that the member is a revolving member and revolves in synchronization movement of the anvils (14p to 14y); the revolving member is provided with a body enclosing a rotational center axis of the revolving member, in the body, a through hole being formed that extends perpendicularly to the rotational center axis and passes through the rotational center axis, with a compression spring arranged in the through hole of the body, and with a plurality of stop members fixed to the body respectively on an one-end side and another end side of the through hole, and a pair of cutters are respectively arranged on the one-end side and the other end side of the through hole, then each of the cutters is located between the compression spring in a compressed state and the stop member, and then each of the cutters is biased to a radial-directional outer side of the revolving member by the compression spring; each of the cutters is held in a manner of being retractable from a predetermined position toward the inner side of the revolving member; each of the cutters has a blade edge protruding to the outer side of the revolving member and, when the blade edge becomes such as to face the anvil (14p to 14y) in association with revolution of the revolving member, the blade edge cuts the web (2, 2k) pinched between the blade edge and the anvil (14p to 14y). a plurality of pads (12p to 12y) that move in a circumferential direction along a cylindrical movement path and hold a web in a releasable manner; a plurality of anvils (14p to 14y) that are arranged between the pads (12p to 12y) adjacent to each other and that move in the circumferential direction together with the pads (12p to 12y); a member that is arranged, with an interval in between, opposite to the web moved in a state of being held by the pads (12p to 12y); a cutter that is held by the member, characterized in that the member is a revolving member and revolves in synchronization movement of the anvils (14p to 14y); the revolving member is provided with a body enclosing a rotational center axis of the revolving member, in the body, a through hole being formed that extends perpendicularly to the rotational center axis and passes through the rotational center axis, with a compression spring arranged in the through hole of the body, and with a plurality of stop members fixed to the body respectively on an one-end side and another end side of the through hole, and a pair of cutters are respectively arranged on the one-end side and the other end side of the through hole, then each of the cutters is located between the compression spring in a compressed state and the stop member, and then each of the cutters is biased to a radial-directional outer side of the revolving member by the compression spring; each of the cutters is held in a manner of being retractable from a predetermined position toward the inner side of the revolving member; each of the cutters has a blade edge protruding to the outer side of the revolving member and, when the blade edge becomes such as to face the anvil (14p to 14y) in association with revolution of the revolving member, the blade edge cuts the web (2, 2k) pinched between the blade edge and the anvil (14p to 14y).