The invention provides a waste water zero emission treatment system for a hot-dip galvanizing workshop, relates to an industrial waste water treatment system, in particular to a waste water treatment system for the hot-dip galvanizing workshop. The waste water zero emission treatment system for the hot-dip galvanizing workshop is characterized by comprising a sewage collecting unit collecting waste water in a rinsing slot via a sewage collecting tank, and rinsing water treatment equipment for inputting water in the sewage collecting tank, water in an alkali tank and pure water to a neutralization tank for neutralization, removing ferric salt and then adjusting a pH value; inputting the neutralized water to an oxidizing can and filling oxygen in the oxidizing can; inputting the water in the oxidizing can to a sloping sedimentation basin for sedimentation; inputting waste residues at the bottom of the sloping sedimentation basin to a plate filter press for pressure filtration; and finally inputting liquid at the upper part of the sloping sedimentation basin to a filtering and sedimentation basin for filtration and sedimentation, and then inputting the filtered and settled water into a pure water tank. The waste water zero emission treatment system solves the waste water treatment problem of the existing hot-dip galvanizing plant, saves finite water resource and protects environment.