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 intoa 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.