A web guiding apparatus for preventing meandering of a web conveyed successively, comprising: a base; a rocking frame rocking around a rocking axis perpendicular to a reference surface of the base; a first roller for web provided on the rocking frame and having a rotation axis parallel to the reference surface of the base, the web being wound around the first roller; a control apparatus for controlling an operation of rocking means for rocking the rocking frame; a position detection sensor, connected to the control apparatus, for detecting an end of the web in a width direction, wherein the operation of the rocking means for rocking the rocking frame is controlled based on a signal transmitted from the position detection sensor; and a support portion provided between the rocking frame and the base, and supporting movement of the rocking frame with respect to the base, the support portion comprises: a base member provided on the base and having a rolling surface parallel to the reference surface of the base; and a second roller provided on the rocking frame so as to roll on the rolling surface of the base member, the rolling surface of the base member is formed so that an axial direction thereof intersects an arc with the rocking axis of the rocking frame as a center, characterized in that a width of the second roller is wider than a width of the rolling surface of the base member, and the second roller is provided so as to move along the arc with the rocking axis of the rocking frame as the center when the rocking frame rocks. a base; a rocking frame rocking around a rocking axis perpendicular to a reference surface of the base; a first roller for web provided on the rocking frame and having a rotation axis parallel to the reference surface of the base, the web being wound around the first roller; a control apparatus for controlling an operation of rocking means for rocking the rocking frame; a position detection sensor, connected to the control apparatus, for detecting an end of the web in a width direction, wherein the operation of the rocking means for rocking the rocking frame is controlled based on a signal transmitted from the position detection sensor; and a support portion provided between the rocking frame and the base, and supporting movement of the rocking frame with respect to the base, the support portion comprises: a base member provided on the base and having a rolling surface parallel to the reference surface of the base; and a second roller provided on the rocking frame so as to roll on the rolling surface of the base member, a base member provided on the base and having a rolling surface parallel to the reference surface of the base; and a second roller provided on the rocking frame so as to roll on the rolling surface of the base member, the rolling surface of the base member is formed so that an axial direction thereof intersects an arc with the rocking axis of the rocking frame as a center, characterized in that a width of the second roller is wider than a width of the rolling surface of the base member, and the second roller is provided so as to move along the arc with the rocking axis of the rocking frame as the center when the rocking frame rocks.