Prefabricated carved breast board component

The utility model relates to a prefabricated carved breast board component, and belongs to the technical field of building construction. The prefabricated carved breast board component comprises a prefabricated breast board column (1) and a prefabricated terrace stone (2), a groove is formed in the top end of the prefabricated terrace stone (2), and a plurality of adjusting devices used for adjusting the height and perpendicularity of the prefabricated breast board column (1) are evenly arranged at the bottom of the groove. The plurality of adjusting mechanisms are arranged below the prefabricated breast board column, and the height and the perpendicularity of the prefabricated breast board column can be adjusted and controlled by adjusting the height of the part, extending out of the embedded sleeve, of each adjusting bolt in each mechanism, so that the attractiveness and the safety of the carved breast board are kept; and L-shaped corner connectors are arranged on the two sides of the prefabricated breast b