The efficient and environment-friendly complete set of engine wastewater treatment equipment mainly comprises a grating ditch, an oil separation sedimentation tank, an adjusting tank, an air flotationdevice, an oil-water separator, an intermediate recycling water tank, an MBR membrane system tank and a clean water tank which are sequentially connected, A mechanical grid is arranged in the grid ditch, and a filter screen inclined grid is further arranged in front of the mechanical grid; An oil skimmer is arranged in the oil separation sedimentation tank; The MBR membrane system tank comprisesan anaerobic tank, an aerobic tank and an MBR membrane tank. The equipment is scientific in structural design, reasonable and reliable in operation and simple and convenient to maintain.