In this thesis, we study the transport properties of the optimum Sputtering condition of the EuBCO superconducting films first. In order to ensure the validity of the superconductor-graphene-superconductor (SGS) structure, we will give some statements about the measuring process of the superconductor-normal metal-superconductor (SNS) structure. Until now, the low-temperature superconductors are used as electrodes for the SGS structure represented in the papers. That is why we combine EuBCO, Type-II high-temperature superconductor, and graphene to make the SGS structure. We may observe the supercurrent passing through the whole device and the phenomena of Andreev reflection between graphene and superconductor. Because of a little different physics between low and high- temperature superconductors, we expect it can represent different physics on our device.