The invention discloses an installation device for a passenger car windscreen. The installation device comprises a suction cup frame, a plurality of suction cups are installed at the bottom of the suction cup frame, and the middle of the suction cup frame is provided with a supporting beam; a connection block is welded to the supporting beam, one side of the connection block is provided with a gas distributor, the other side of the connection block is provided with a lifting beam parallel to the suction cup frame, and the top end of the lifting beam is provided with a lifting lug; a gas outlet of the gas distributor is connected with the suction cups through gas pipes, and a gas inlet of the gas distributor is connected with a gas source drying tank and a gas-pressure meter through gas pipes in sequence; and the gas-pressure meter is connected with a vacuum pump and a gas blowing pump through gas pipes. According to the installation device for the passenger car windscreen, the multiple suction cups are arranged on the two opposite edges of the suction cup frame so that the passenger car windscreen can be adsorbed, the connection block is arranged on the supporting beam in the middle of the suction cup frame to be connected with the lifting beam, and the lifting beam is hung on lifting equipment through the lifting lug at the top end of the lifting beam; and the lifting equipment drives the passenger car windscreen to do vertical movement, horizontal movement and turnover movement so that the passenger car windscreen can be carried to the installation position to be installed, and convenience and quickness are achieved.