The invention discloses an automatic plate bending machine. The automatic plate bending machine aims at achieving the purpose of multi-angle machining. According to the technical scheme, the automatic plate bending machine is characterized by comprising a base and a machining device arranged on the base; the machining device comprises multiple first machining assemblies and multiple second machining assemblies; each of the first machining assemblies and the second machining assemblies comprises movable base bodies slidably connected to the two sides of the base, and telescopic rods are arranged on each movable base body; each first machining assembly comprises oppositely-arranged pressing blocks, and each pressing block is at least rotationally connected with the two telescopic rods; each second machining assembly comprises pressing rolls rotationally connected to the telescopic rods; the base is further provided with a detection device for detecting the positions of the pressing blocks or the pressing rolls in real time and a control assembly for controlling reciprocating movement of the telescopic rods and the movable base bodies through the detection device; and the detection device obtains the bending states of plates to be machined through the positions of the pressing blocks and the pressing rolls.