The invention discloses a drilling device for metal sheet material machining, and relates to the technical field of metal machining. The drilling device for metal sheet material machining comprises ashell, limiting rods are fixedly connected with the two sides of the top of the shell, and a limiting ring is arranged on the surface of each limiting rod in a sleeving mode; a motor box is fixedly connected between the two limiting rings, a limiting block is fixedly connected to the top end of each limiting rod, and the bottom of each limiting block is fixedly connected with the top of the corresponding limiting ring through a limiting spring; and each limiting spring is arranged on the surface of the corresponding limiting rod in a surrounding mode, an inner cavity of the motor box is fixedly connected with a motor, and an output shaft of the motor is fixedly connected with a rotating shaft through a coupling. According to the drilling device for metal sheet material machining, through improvement of a device body, the working efficiency of the drilling device is improved, and meanwhile, damage to the drilling device due to the relatively excessively large pressure applying strengthand relatively excessively large hardness of metal sheet materials is avoided.