The invention relates to a dry-hanging system for a decoration material with the curved surface adjustable. The system comprises a joist and an installation component, the installation component is connected with the joist, the installation component comprises arc-shaped rotating parts, hanging parts, vertical hanging parts and embedded parts, the arc-shaped rotating parts are connected with the joist, the arc-shaped rotating parts can make transverse movement relative to the hanging parts and be fixedly connected with the hanging parts, the vertical hanging parts can make longitudinal movement relative to the hanging parts and be fixedly connected with the hanging parts, the embedded parts are arranged on the hanging parts, and the joist is a round joist. By means of the dry-hanging system for the decoration material with the curved surface adjustable, the stone installation efficiency is improved through the assembling mode, no welding and rust-proof treatment is required, the human cost is saved, and the safety is improved; in addition, through the installation component, the curved-surface decoration material can be adjusted in the horizontal direction and the vertical direction, and different installation requirements can be satisfied; meanwhile, detailed mistakes can be adjusted at any moment, massive dismounting for modification is avoided, and the cost is saved.