Municipal sewage modular equipment (5m³ is a module) adopts efficient micro-aeration biotechnology to carry out activated sludge treatment for pollutants in sewage, and uses microorganisms to decompose pollutants in sewage, so that its water quality can meet discharge standards. It has four intelligent modules: intelligent aeration system, intelligent sludge reflux system, intelligent dosing system and intelligent Internet of Things control system. It has the characteristics of high degree of automation, small area, low energy consumption and easy operation.