PCB circuit welding jig

The utility model discloses a PCB (printed circuit board) circuit welding jig, which belongs to the technical field of PCB welding and comprises a base, a placing groove is arranged above the base, a clamping component is arranged above the interior of the placing groove, a cleaning component is arranged below the interior of the placing groove, an air draft component is arranged on one side above the base, and a clamping component is arranged on the other side above the base. According to the PCB welding device, the clamping assembly is arranged, so that the effect of conveniently clamping PCBs of different sizes for welding is achieved, when the PCB welding device is used, the PCBs of different sizes can be conveniently clamped for welding, and the use practicability is improved; according to the PCB welding device, the effect that dust and chippings on the surface of a PCB are conveniently absorbed and treated is achieved, when the PCB is welded, an exhaust fan is started, the exhaust fan sucks the dust an