The invention discloses an assembly type gravity finished product supporting and hanging frame. The supporting and hanging frame comprises a supporting and hanging frame body, mounting bolts, a base, a T-shaped corner connecting piece, an L-shaped corner connecting piece, a connecting rod piece (a square pipe with a hole) and a square pipe lock catch. The form of the support hanger can be a single-row form, a multi-row form, a multi-row form and the like. The assembly type gravity finished product supporting and hanging bracket is connected together through connecting rod pieces (square pipes with holes) and various connecting pieces. According to the assembling mode, machining and production are conducted in a factory according to user requirements and engineering requirements, and after production is completed, the connecting pieces and the connecting rod pieces (square pipes with holes) are transported to the site to be assembled into a whole. The connecting pieces and the connecting rod pieces have the following advantages that in the aspect of installation, modular and standardized production is achieved, the connecting pieces and the connecting rod pieces (square pipes with holes) of the same model can be universal, assembling is rapid and convenient, and cost is low; construction efficiency can be improved, labor cost can be reduced, installation is convenient, overall performance is stable, construction is convenient, the construction period can be shortened, safety and attractiveness are achieved, and later maintenance cost is low; various styles meeting production requirements can be flexibly matched through assembly of different accessories. In the aspect of environmental protection, a traditional support manufactured on site is prone to causing environmental pollution in the aspects of profile cutting, welding, anticorrosive paint brushing and the like, and damage is caused to machining personnel. The assembly type gravity finished product support hanger effectively prevents the above phenomena, and is more beneficial to environmental protection.