The utility model belongs to the building steel structure field, concretely relates to platform structure is hung to assembled, this platform structure sets up on the bottom of the building face, including a plurality of rectangular pipe girders, adjacent rectangular pipe girder is connected through a plurality of rectangular pipe secondary beams, is provided with the platform bed board between the adjacent rectangular pipe secondary beam, the both ends of each rectangular pipe girder are provided with the round steel jib, and the round steel jib passes through the built -in fitting and is connected with the bottom of the building face. The utility model discloses can overcome a little unable installation problem of hanging that the embedding deviation of built -in fitting leads to, the construction precision of platform is hung in the guarantee, the structure of assembled is adopted, the efficiency of construction can be improved by a wide margin.