The invention discloses a stone honeycomb composite board suspended ceiling system which comprises galvanized angle steel suspenders (1), galvanized angle steel suspended ceiling joists (2), stone honeycomb composite boards (3) and fixing pieces. The upper ends of the galvanized angle steel suspenders (1) are fixed to a wall through the fixing pieces arranged on the wall, and the lower ends of the galvanized angle steel suspenders (1) are connected with the stone honeycomb composite boards (3) through the galvanized angle steel suspended ceiling joists (2); the stone honeycomb composite boards (3) are connected with the galvanized angle steel suspended ceiling joists (2) through Z-shaped hanging pieces (6), the stone honeycomb composite boards (3) are connected through line-shaped hanging pieces (7), and the galvanized angle steel suspenders (1) and the galvanized angle steel suspended ceiling joists (2) are welded. Through the adoption of the structure, the stone honeycomb composite board suspended ceiling system is simple in structure, high in overall stability and convenient and rapid to construct, and has a good thermal preservation property, a good thermal insulation property, a good sound isolation prosperity, a good damp-proof property and a good anti-impact property, and composite boards are not prone to falling off.