Previous usage of POPs, regulatory limits and source identification methods used in China and abroad were summarized.

Environment occurrence, source and risk of OCPs, PCBs and PAHs are reviewed.

Both OCPs and PAHs residue are relatively low, but PCBs residue is at a higher degree.

Spatial pattern of OCPs showed a significant increase along urban- rural gradient, while PCBs and PAHs showed opposite.

POPs mainly originate from history usage, oil field, water and sediment transport and atmospheric deposition.