The invention discloses a wiring board extension socket support welding machine and a resistance welding technology thereof. The wiring board extension socket support welding machine comprises an automatic extension socket support compensation mechanism, a copper wire feeding mechanism, an extension socket support feeding mechanism, a copper wire straightening mechanism, a vertical extension socket support distributing mechanism, a movable positioning mechanism, a welding mechanism, a mechanical arm assembly, a wire drawing mechanism, a servo horizontal wire drawing assembly, a shearing in-situ translation adjusting assembly, a shearing assembly and a water pipeline system. According to the wiring board extension socket support welding machine and the resistance welding technology thereof,a series of operation such as automatic feeding, automatic conveying, automatic straightening, automatic distributing, automatic positioning, automatic welding, automatic shearing and finished product discharging of copper wires and extension socket supports can be completed, the operation process is full-automatic, manual participation is not needed, the automation degree is high, the extensionsocket supports are firmly welded, the welding effect is good, and the problems that the contact resistance is large, heating is prone to occur, falling-off and outbreak of a fire are prone to occur,the welding efficiency is low, and the labor cost is high due to the fact that a traditional manual soldering mode is adopted can be solved.