The invention provides a welding tool. The welding tool comprises a supporting base and at least two pressing members; two of the at least two pressing members are symmetrically mounted at the two ends of the supporting base, the supporting base is used for supporting to-be-welded workpieces; each pressing member comprises a first driving member, a first switch, a support arm and a pressing portion; the first end of each support arm is mounted at one end of the supporting base; the second end of each support arm extends to the other end of the supporting base; the second end of each support arm is connected with the corresponding first driving member; the output end of each first driving member is connected with the corresponding pressing portion; and the first switches are connected withthe corresponding first driving members and used for controlling the corresponding first driving members to drive the corresponding pressing portions to move up and down, so that the pressing portionsare switched to press and leave the to-be-welded workpieces. The pressing portions are electrically controlled to move up and down, then the to-be-welded workpieces are pressed or loosened, the production efficiency is improved, and meanwhile, by electrically controlling the pressing portions to move up and down, the accuracy of fixing positions of the to-be-welded workpieces is improved.