The utility model relates to an electric climbing formwork device for building construction, which structurally comprises a formwork system, a formwork support body, a bearing bracket, a work platform, a climbing device, a wall attaching support, a guide rail, an anti-falling device, a control system and other components. The climbing device consists of a flexible chain and a motor-driven mechanism, wherein the flexible chain surrounds the upper end and the lower end of the guide rail and the bearing bracket through a pulley block, and the bearing bracket and the guide rail are lifted alternatively for positioning and bearing through the forward rotation and the backward rotation of the motor-driven mechanism, so that the climbing of the formwork system and the work platform can be realized. The electric climbing formwork device has the advantages of being convenient to use, simple in assembly and disassembly, and good in safety performance.