The utility model discloses an SAGD (Steam Assisted Gravity Drainage) extracted liquid oil-water fast separation and super heavy oil long-distance conveying system. A discharging hole of a light dydrocarbon total storage tank is communicated with a feeding hole of a light dydrocarbon temporary storage tank through a light dydrocarbon input pipeline, a discharging hole of the light dydrocarbon temporary storage tank is communicated with a light dydrocarbon output pipeline through a frequency conversion liquid adding pump, a check valve capable of preventing light dydrocarbon in the light dydrocarbon output line from reflowing to the light dydrocarbon temporary storage tank is arranged on the light dydrocarbon output pipeline, an oil discharging hole in the tail end of an oil-water separating system is communicated with a feeding hole of a purified crude oil temporary storage tank through an oil outlet pipeline, an online viscometer is arranged on a connecting pipeline and/or the oil outlet pipeline, the light dydrocarbon output pipeline is communicated with a super heavy oil extracted liquid output pipeline or communicated with the connecting pipeline or communicated with a pipeline section of the oil outlet pipeline, which is positioned between the oil discharging hole in the tail end of the oil-water separating system and the online viscometer on the oil outlet pipeline. According to the utility model, the super heavy oil conveying distance is prolonged, and further the energy consumption is reduced. The super heavy oil conveying distance is further prolonged, the production cost is lowered, and the quality of downstream petroleum is not influenced.