The present invention relates to a prefabricated reinforced concrete-filled steel pipe sleeve joint and an installation method thereof, which belongs to the technical field of structural engineering. During the construction process of the traditional column beam, there is a welding link between the steel pipes, resulting in unstable welding quality, long construction time and other issues. The present invention provides a good solution to these problems. The present invention includes high-strength outsourcing steel pipes, reinforcement restraining plates, high-tensile reinforcements, transformation separation sleeves and an ordinary outsourcing steel pipe, wherein: two round transformation separation sleeves are respectively located at an upper end and a lower end of the ordinary outsourcing round steel pipe; one of the round transformation separation sleeves, which is located at the upper end of the ordinary outsourcing round steel pipe, is connected with one of the high-strength outsourcing round steel pipes; the other round transformation separation sleeve, which is located at the lower end of the ordinary outsourcing round steel pipe, is connected with the other high-strength outsourcing round steel pipe; the high-tensile reinforcements penetrate through the ordinary outsourcing round steel pipe; upper ends and lower ends of the high-tensile reinforcements are respectively extended to interiors of the high-strength outsourcing round steel pipes; the high-tensile reinforcements are connected with the round transformation separation sleeves; the upper ends and the lower ends of the high-tensile reinforcements are respectively connected with the round reinforcement restraining plates. The present invention is used for the construction of the column beam in the building structure.