The invention relates to a making method of a nine-striped car child seat safety woven belt. The method mainly comprises the following steps: warping warps on a special device in a specific tension environment, respectively putting warped beams on a special weaving machine, weaving, and carrying out a dyeing and finishing operation on a special dyeing and finishing device under a specific technological condition to obtain the nine-striped car child seat safety woven belt. Compared with car child seat safety woven belts made in the prior art, the nine-striped car child seat safety woven belt made through adopting the making method has the advantages of high strength, good abrasion resistance, moderate elongation rate, high light resistance, non-toxicity, good flame resistance, good edge self-lock thread running resistance and the like, so the nine-striped car child seat safety woven belt provides a high safety guarantee for babies and children in motor vehicles.