Open type curtain wall waterproof dry hanging system

The utility model belongs to the technical field of outer wall surface construction of constructional engineering, and relates to an open type curtain wall waterproof dry hanging system. The open type curtain wall waterproof dry hanging system comprises a main keel, a secondary keel, a waterproof plate, a hanging piece adapter, an adapter positioning plate, a hanging piece and a hanging piece positioning plate, wherein the main keel and the secondary keel play a supporting role, and the hanging piece is used for installing a curtain wall exterior facing. The waterproof plate is arranged and mounted between the secondary keel and the hanging piece adapter; a long-strip-shaped bolt hole used for being connected with the secondary keel is formed in the hanging piece adapter; tooth-shaped stripes which are meshed with each other are arranged on the hanging piece adapter and the adapter positioning plate; the hanging piece is provided with a long-strip-shaped bolt hole used for being connected with the hanging pie