Building decoration material cutting device capable of preventing dust from flying

The invention discloses a building decoration material cutting device capable of preventing dust from flying. The building decoration material cutting device comprises a cutting table, a lifting device, a knife rest moving device, a cutting frame, a cutting knife, a dust blowing device, a dust collecting device and a limiting and fixing device, the lifting device is arranged below the cutting table, the cutting knife is arranged on a cutting shaft through a knife holder, the dust blowing device is arranged above an L-shaped cavity mounting plate, and the dust collecting device is arranged in the cutting table. An air blower and a dust blowing pipe are arranged on the L-shaped cavity mounting plate, so that dust and chippings generated in the cutting process can be effectively blown into the cutting table from the cutting knife and the surface of the cutting table, and dust flying can be effectively avoided; and the dust collecting device and a dust suction box are arranged in the cutting table, the dust and t