The invention discloses a core pipe heating device for a crude oil gathering and transportation pipeline and a using method of the core pipe heating device. The core pipe heating device comprises thepipeline used for transporting crude oil, a heating core pipe, a power cable, a control system, a signal cable, sealing joints and a temperature measurement element; the control system is connected with the temperature measurement element through the signal cable and further connected with the heating core pipe through the power cable; the control system is used for collecting the temperature measured by the temperature measuring element and controlling heating of the heating core pipe according to the temperature; and the side wall of the pipeline is provided with holes, the heating core pipeand the temperature measuring element are inserted into the holes, the holes are sealed through the sealing joints, the sealing joints are provided with cable holes for allowing the signal cable andthe power cable to pass, and after passing, the cable holes are sealed. The core pipe heating device has the advantages that heat, lost in the flowing process, of the crude oil is supplemented, so that the oil temperature is always higher than the coagulation point of an oil product, and safe transporting of the crude oil is ensured; the magnitude of the current can be adjusted to match the heating power with the oil yield output; and the automation degree is high, and temperature control is accurate.