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Graphene-based heterostructure is one of the most attractive topics in physics and material sciences due to its intriguing properties and applications.We report the one-step fabrication of a novel graphene/Mo2C heterostructure by using chemical vapor deposition (CVD).The composition and structure of the heterostructure are characterized through energydispersive spectrometer,transmission electron microscope,and Raman spectrum.The growth rule analysis of the results shows the flow rate of methane is a main factor in preparing the graphene/Mo2C heterostructure.A schematic diagram of the growth process is also established.Transport measurements are performed to study the superconductivity of the heterostructure which has potential applications in superconducting devices.