A rolling mill area production equipment with a push plate angle-adjustable side guide, comprising a side guide capable of adjusting an angle formed by a center line of a rolling piece and a rolling center line to a preset angle, characterized in that the side guide comprises push plates located on both sides of a rotary roller table, push arms connected with the push plates, and driven units, the driven units are able to drive the push arms so as to drive the push plates to move closer to the rolling piece, to clamp outer walls on both sides of the rolling piece and drive the rolling piece to rotate to the preset angle; wherein the push arms comprise a first push arm and a second push arm that are able to be telescopically adjusted, and the push plate is pivotally connected to ends on the same side of the first push arm and the second push arm, the driven units are able to adjust expansion and contraction of the first push arm and the second push arm in a direction approaching to the rolling piece, so as to adjust the preset angle of the push plates, such that the push plates are able to clamp the outer walls on both sides of the rolling piece; wherein the first push arm and the second push arm are disposed in parallel in a horizontal direction, the first push arm and the second push arm are fixed on both sides of the rotary roller table, characterized in that: an installation groove is provided on a side wall of the push plate, and an end on one side of the first push arm extends into the installation groove and is pivotally connected to an inner wall of the installation groove, a cylindrical hinge member is fixed on an end on one side of the second push arm, elongated hinge holes are provided respectively on top and bottom inner walls of the installation groove, and the end of the second push arm extends into the installation groove and top and bottom of the hinge member are able to be slidably embedded in the corresponding hinge hole. wherein the push arms comprise a first push arm and a second push arm that are able to be telescopically adjusted, and the push plate is pivotally connected to ends on the same side of the first push arm and the second push arm, the driven units are able to adjust expansion and contraction of the first push arm and the second push arm in a direction approaching to the rolling piece, so as to adjust the preset angle of the push plates, such that the push plates are able to clamp the outer walls on both sides of the rolling piece; wherein the first push arm and the second push arm are disposed in parallel in a horizontal direction, the first push arm and the second push arm are fixed on both sides of the rotary roller table, characterized in that: an installation groove is provided on a side wall of the push plate, and an end on one side of the first push arm extends into the installation groove and is pivotally connected to an inner wall of the installation groove, a cylindrical hinge member is fixed on an end on one side of the second push arm, elongated hinge holes are provided respectively on top and bottom inner walls of the installation groove, and the end of the second push arm extends into the installation groove and top and bottom of the hinge member are able to be slidably embedded in the corresponding hinge hole.