A carrier moving system for a painting process of a vehicle includes a loaded section, an unloaded section, and a plurality of multi-joint type carriers. The multi-joint carriers include a driving part and a driven part. A guiding monorail is disposed through both the loaded section and the unloaded section so as to guide each multi-joint type carrier through both sections. A storing monorail disposed in the unloaded section and arranged in parallel with the guiding monorail and a switching unit for switching a position of the driven part of the multi-joint type carrier between the guiding monorail and the storing monorail.