Hot bending mold

The invention discloses a hot bending mold. The hot bending mold comprises a concave mold and a convex mold, wherein a lug boss is arranged on the convex mold; the concave mold is provided with a concave cavity; the lug boss is fastened in the concave cavity and is enclosed with the concave cavity to form a mold cavity for forming a curved glass plate; the surface of the lug boss facing towards the concave mold comprises a first plane part and two first curved surface parts which are respectively arranged at two ends of the first plane part; and the cavity wall of the concave cavity comprisesa second plane part which is vertically opposite to the first plane part and two second curved surface parts which are respectively arranged at two ends of the second plane part and are vertically opposite to the two first curved surface parts respectively. When the hot bending mold disclosed by the invention is used for forming a glass plate with a bent structure at one side, firstly, a flat glass plate is put into the m