The utility model discloses an oil collecting system belongs to oil extracting worker journey technical field. This oil collecting system includes: gathering line, water mixing pipeline, wastewater pot and heat exchanger, gathering line's first end and oil recovery well head intercommunication, second end and metering room header intercommunication, the first end of water mixing pipeline is in the position and gathering line intercommunication that are close to the oil recovery well head, and the intercommunication with wastewater pot is held to the second, and the heat exchanger setting is on the water mixing pipeline for to heating through the sewage of water mixing pipeline from wastewater pot flow direction gathering line. The utility model provides a great problem of calorific loss in the correlation technique, reached the effect that reduces calorific loss. The utility model is used for collection oil.