Reinforced concrete beam and fabricated structure construction method thereof

An reinforced concrete beam and a fabricated structure construction method thereof are provided. The reinforced concrete beam comprises a steel pipe column, a hole is formed in the steel pipe column, a steel bar of the reinforced concrete beam penetrates through the steel pipe column from the hole, and a reinforcing steel plate is arranged at the hole; concrete is poured into the steel pipe column. The first-time concrete pouring in the steel pipe column utilizes a tower crane to hang a hopper, a hose is arranged at the bottom of the hopper, concrete is connected with one side of the steel pipe column through the hopper and the hose at the bottom of the hopper, and the concrete is poured into the steel pipe from one side of the steel pipe column. According to the steel pipe column of the reinforced concrete beam, a direct hole forming mode is adopted, the steel bars of the reinforced concrete beam penetrate through the steel pipe column from the holes, the overall size of the component is reduced, and in addi