The invention discloses an adjustable stone dry hanging system, and belongs to the technical field of indoor wall surface stone dry hanging. The adjustable stone dry hanging system comprises a wall body base layer and a decorative wall surface hanging on the wall body base layer in a drying mode, the decorative wall surface includes a plurality of spliced stones, symmetrical metal fittings are arranged on the upper side and the lower side of the decorative wall surface, metal pendants are arranged between every two upper-lower adjacent stones, and stone slide rails are arranged between the upper-lower two metal fittings, or between the metal fittings and the adjacent metal pendants or between every two upper-lower adjacent metal pendants. Recessed bottom grooves are formed in the upper side and the bottom side of the stones, the bottom grooves slide into the stone slide rails and are fixed on the metal fittings or the metal pendants by fixing glue, and the metal fittings and the metalpendants are fixed on the wall body base layer by self-tapping screws. The stone material construction process is energy-saving and environmentally friendly, groove forming loss is low, the speed is high, the hanging mounting is firm, the construction is fast, the surface of a decorative plate is smoother and more beautiful, and the requirement of low comprehensive cost is realized.