The invention relates to the electric network pollution data collection technology, in particular to an electric network pollution data ring-type collection system based on a PQDIF standard. The electric network pollution data ring-type collection system based on the PQDIF standard solves the problems that an existing electric network pollution data collection system is poor in data collection real-time performance, poor in data transmission stability, low in data transmission speed and poor in data sharing performance. The electric network pollution data ring-type collection system based on the PQDIF standard comprises power quality monitors, carbon footprint power monitors, a monitoring master station, a database server, client sides, exchanges, gateways and optical fibers, wherein each power quality monitor is in end-to-end connection with the first exchange through the optical fibers to form a ring topological structure, each carbon footprint power monitor is in end-to-end connection with the second exchange through the optical fibers to form a ring topological structure, and each client side is in end-to-end connection with the fourth exchange through the optical fibers to form a ring topological structure. The electric network pollution data ring-type collection system based on the PQDIF standard is suitable for collection of electric network pollution data.