The invention discloses a lightning protection copper bonding process, comprising: tightly attaching a plurality of copper bars on a circuit board; inserting components into the circuit board; welding the circuit board in a wave-soldering device, wherein the copper bars and the components are welded on the circuit board; and completing welding. The prior art lacks the technique of soldering heavy current copper bars on a circuit board and performing detection; according to the invention, the copper bars are tightly attached on the circuit board, and are wave-soldered on the circuit board together with the components on the circuit board; after welding, the circuit board is electrified and is detected by an infrared heat imaging instrument, thereby firmly and rapidly welding and detecting the copper bars on the circuit board.