Prefabricated steel reinforced concrete column-prefabricated reinforced concrete beam connecting joint and construction method

The invention discloses a prefabricated steel reinforced concrete column-prefabricated reinforced concrete beam connecting joint and a construction method. The prefabricated steel reinforced concrete column-prefabricated reinforced concrete beam connecting joint comprises a prefabricated steel reinforced concrete column, a prefabricated reinforced concrete beam, a beam-column joint structure and a beam cast-in-place concrete layer. The prefabricated steel reinforced concrete column comprises a core column, column upper concrete and column lower concrete; the core column is arranged along the column height in a full-length mode, and column vertical steel bars are arranged on the outer side of the core column. The column upper concrete wraps the outer sides of the upper parts of the core column and the column vertical steel bars; an upper stirrup is arranged in the column upper concrete; column lower concrete wraps the outer sides of the lower parts of the core column and the column vertical steel bars; a lower