Precast concrete column vertical connecting structure and construction method

The invention discloses a prefabricated concrete column vertical connecting structure and a construction method, and the prefabricated concrete column vertical connecting structure comprises a lower-layer fully-prefabricated concrete column, an upper-layer fully-prefabricated concrete column and a fully-prefabricated concrete beam, a column top steel pipe flange is connected with a column bottom steel pipe flange through a prefabricated column bolt; a horizontal bracket structure is embedded in the side edge of the upper portion of the lower-layer fully-prefabricated concrete column, profile steel structures are embedded in the two ends of the fully-prefabricated concrete beam, and the horizontal bracket structure is connected with the profile steel structures in a matched mode. The construction method has the beneficial effects that construction is easy and convenient, the fully-prefabricated concrete beams and the fully-prefabricated concrete columns are prefabricated in a factory, a field connection area i