The invention discloses an automatic aiming laser bird scaring device based on mode recognition, which comprises a horizontal rotating table and a vertical rotating table. The vertical rotating table is arranged on the horizontal rotating table, the horizontal rotating table and the vertical rotating table are connected in movable mode, a camera is arranged in the vertical rotating table, and a laser device is arranged on the vertical rotating table. Besides, the invention further discloses a bird scaring method based on recognition pattern, firstly the camera is utilized to search targets and locate the targets, and then the laser device emits laser to achieve the aim of scaring birds. The bird scaring device and the bird scaring method not only avoid random irradiation of laser so as to avoid interference of the laser device on people and passing-by vehicles, but also is accurate in bird locating, adopts the low-power laser device to scare birds to lower cost, causes no serious damage to birds, avoids dropping of bird scaring effect caused by the fact that birds are adapted to the bird scaring device, can further update a controller database and application programs according to different application occasions, and increases adaptability of the device.