The invention discloses an electronic gun assembly debugging platform. The platform comprises a rack, a first simulation bearing plate, a second simulation bearing plate, a test mechanism, an electronic gun rear part assembly test mechanism and a vacuum flange simulation mechanism, wherein the first simulation bearing plate and the second simulation bearing plate are movably arranged on the rack,and the test mechanism comprises a simulation supporting plate which is detachably and fixedly arranged on the first simulation carrying plate, an adjusting plate which is arranged on the simulation supporting plate, and a test simulation piece which is fixed on the adjusting plate and is used for simulating an electronic gun front assembly and a electronic gun middle assembly after the electronicgun front assembly and the electronic gun middle assembly are in butt joint. According to the electronic gun assembly debugging platform, the structure of an automatic installing device is basicallysimplified and reproduced, and meanwhile, a position and a posture of an electronic gun rear part assembly and a vacuum flange can be adjusted; manual driving is used for driving components to move, so that the cost is reduced, and the operation and inspection are convenient; and the test mechanism is used for be switched between the assembly platform and an actual application scene, so that a real installation scene can be reproduced on the assembly platform, assembling and debugging on the assembly platform can be realized, and the condition that field adjustment is inconvenient is effectively overcome.