Vehicle lamp cap base fastening device

The invention relates to the technical field of vehicle parts, in particular to a vehicle lamp cap base fastening device. The vehicle lamp cap base fastening device comprises a lamp cap insertion baseand a lamp holder. The vehicle lamp cap base fastening device has the advantages of being convenient in assembly, good in sealing effect and the like; manufacturing materials are environment-friendlyand insulated, so that use is safer, and cost is reduced; a vehicle owner pulls handles with hands to assemble a lamp cap base via through holes; the lamp cap base can be further fastened by using fixing parts and the through holes; assembly is more convenient; a vehicle lamp is arranged in the lamp cap insertion base; a lamp cap is slightly pressed to press down a movable table; then the lamp cap is rotated for 2-3 turns clockwise, so that the lamp cap can be primarily fixed on the lamp holder; meanwhile, contact sheets on contact bars can be in close contact with the lamp cap, so that the lamp cap and the lamp holde