The invention relates to a pulse lamp detection method on a concentrator, in particular to a method for concentrator pulse lamp detection at an assembly line so that a problem of high false detectionrate of concentrator pulse lamps by the existing automatic concentrator detection assembly line can be solved. The method comprises the following steps that: step one, pulse lamp flashlight of a concentrator is transmitted to a pulse conversion device by a light guide post; step two, the pulse conversion device converts the pulse lamp flashlight by a photoelectric converter and carries out shapingon the processed flashlight by an amplifier to form an electric pulse signal; step three, pulse counting is carried out on the electric pulse signal; and step four, if pulse counting changes, the pulse lamp is determined to be good; and otherwise, the pulse lamp is determined to be damaged. Because the light guide post has high reflectivity and does not absorb light, the high transmission efficiency is realized; and thus the interference on the pulse collector by other light sources or background light is reduced substantially, so that the counting accuracy is improved and correct detection on the pulse lamp is guaranteed.