The　design　of　urban　sewage　treatment　plant　lacks　a　cost-effective　verification　method,　In　order　to　reduce　its　verification　cost,　this　paper　proposed　a　simulation　system　of　urban　sewage　treatment　plants　based　on　the　industrial　Internet　platform.　The　physical　models　for　equipment,　hydrodynamics,　and　PLC　control　within　the　sewage　treatment　plant　has　been　constructed　by　leveraging　the　capabilities　of　the　industrial　Internet　platform.　All　parameters　in　the　simulation　system　can　be　customized　to　simulate　various　equipment　parameters　or　control　algorithms.　This　system　enables　the　validation　of　equipment　design　schemes　for　urban　sewage　treatment　plants,　reduces　the　development　period　for　control　algorithms,　and　reduces　testing　costs.