Lifting type building construction discharging platform

The utility model relates to the field of building construction machinery, in particular to a lifting type building construction discharging platform which comprises a first supporting plate, a secondsupporting plate and four supporting columns, the first supporting plate and the second supporting plate are horizontally arranged, the four supporting columns are vertically arranged and used for being connected with the first supporting plate and the second supporting plate, and a connecting base is arranged on two supporting columns of the four supporting columns. Sliding rails are arranged onthe supporting columns in the axial direction, a lifting base with the end matched with the sliding rails is arranged among the four supporting columns, and a containing platform is arranged in the lifting base. The side wall, close to the connecting base, of the first supporting plate is connected with two extending frames which are perpendicular to the side wall of the first supporting plate and are oppositely arranged,