The invention belongs to the technical field of welding tools, and particularly relates to an electric tin absorption device. The electric tin absorption device comprises a shell. A power wire is arranged at the rear end of the shell. The shell is of a barrel-shaped hollow structure. An electric soldering iron is arranged in the shell and is located on the front portion of the shell and arranged in the length direction of the shell. An annular limiting plate extending in the length direction of the shell is arranged on the front portion of the shell. An annular tin absorption cavity is formedby the annular limiting plate and the outer wall of the shell. The annular limiting plate is concentrically arranged on the electric soldering iron in a sleeving manner. A tin absorption opening is formed in the front end of the annular tin absorption cavity and extends towards the pointed portion of the electric soldering iron. By means of the device, the problems that the service life of a tin absorption device is short, and operation is not easy due to separated use are avoided, and the operation efficiency is effectively improved.