The invention relates to the technical field of welding equipment and discloses a liftable welding machine with a heat dissipation function. The liftable welding machine comprises a base, wherein a foundation is arranged at the top of the base, a telescopic rod is arranged at the top of the foundation, a lifting device is arranged in the telescopic rod, a hydraulic buffer block is arranged in the lifting device, the bottom of the hydraulic buffer block is fixedly connected with a torque transfer rod, a connection rod is arranged at the other end of the torque transfer rod, a rocker is fixedly connected with the other end of the connecting rod, and an antiskid ball is arranged at the other end of the rocker. With the adoption of the liftable welding machine with the heat dissipation function, damage to a welding head due to overheat of the welding head can be prevented, the working efficiency of a worker is improved, the workload of the worker is reduced, the height of the welding machine is effectively adjusted, so that the welding machine can weld large articles, and the working efficiency of the worker is improved.