The invention discloses an unmanned aerial vehicle with a beam lamp and an application. The unmanned aerial vehicle comprises a body, a plurality of arms, propellers and a mobile control terminal, wherein the arms are arranged on the body, the propellers are arranged at tail ends of the arms, and the mobile control terminal is wirelessly connected with the propellers. The laser beam lamp is further arranged on the body, the light-emitting direction of the laser beam lamp is perpendicular to the upper surface of the body, and the mobile control terminal controls the flight state of the unmannedaerial vehicle to control the irradiation direction of the laser beam lamp. As the laser beam lamp is arranged on the unmanned aerial vehicle, the laser beam lamp can be conveniently moved, and the brightness and the irradiation distance of the beam lamp are increased by the aid of the characteristic of energy concentration of a laser source. Besides, as the light-emitting direction of the laserbeam lamp is perpendicular to the upper surface of the body, the irradiation direction of the beam lamp can be conveniently changed by controlling the position of the body through the mobile control terminal, 360-degree arbitrary adjustment is realized, different visual patterns are formed, and various requirements of practical application are effectively met.