The invention discloses an electric crimping tool, comprising a shell. The shell is provided with a switch, a power source and a circuit control device are arranged in the lower end of the shell, a motor and a speed reducer are arranged in the upper end of the shell, the output shaft of the speed reducer is provided with a driving gear, the driving gear is mutually matched with a driven gear fixedly arranged on a screw sleeve, the screw sleeve is sleeved on a screw rod in the shell and is mutually and spirally matched with the screw rod, a bump block is arranged on the screw rod, the shell isinternally provided with a front travel switch and a back travel switch mutually matched with the bump block, and the front end of the screw rod is mutually matched with a clamp assembly arranged at the front end of the shell. The invention has the advantages of avoiding the shortcoming of a hydraulic crimp-connection structure, convenient crimp-connection, small size, light weight, convenient carriage, high degree of automation and the like.