Concrete wall corner formwork supporting device

The invention discloses a concrete wall corner formwork supporting device, and relates to the field of building formworks, the concrete wall corner formwork supporting device comprises an outer leaning support and an inner leaning support, the outer leaning support comprises two outer leaning rods which are horizontally arranged, and any ends of the two outer leaning rods are close to each other and fixedly connected; the angle between the two projections of the two outer leaning rods on the horizontal plane is consistent with the external corner designed at the corner part of the corner wall; the inner leaning support comprises two inner leaning rods which are horizontally arranged, any ends of the two inner leaning rods are close to each other and are fixedly connected, and the angle between two projections of the two inner leaning rods on the horizontal plane is consistent with the internal corner designed at the corner part of the corner wall; in addition, the two outer leaning rods correspond to the two