The present invention relates to a mobile phone detection machine comprising a main conveying line, a first detecting machine body and a second detecting machine body, wherein the main conveying lineis mounted between the first detecting machine body and the second detecting machine body which are staggered and have the same structure; the first detecting machine body is internally provided witha circulation detection line, a feeding manipulator and a light source dark box group; the feeding manipulator is used for grabbing mobile phone workpieces on the main conveying line, rotating the same for 180 degrees and placing the same on the circulation detection line; the circulation detection line is used for driving the mobile phone workpieces to move in a circulating square shape; the light source dark box group is used for covering the mobile phone workpieces and shading the external light source; the first detecting machine body and the second detecting machine body are arranged in atwo-station manner and can work simultaneously without waiting, so that the work efficiency is high and the mobile phone detection efficiency is accelerated; the circulation detection line drives themobile phone workpieces to move in the circulating square shape, efficiently utilizing the internal space of the machine body without worrying about collision; the occupied space of the whole machineis reduced; and the space utilization rate is improved.