The invention relates to a concentrating photovoltaic heat radiation component, in particular to a low power concentrating photovoltaic strip section staggered heat radiation fin heat radiator, and belongs to the technical field of solar power generation. The low power concentrating photovoltaic strip section staggered heat radiation fin heat radiator comprises a strip section staggered heat radiation fin section sheet array, heat radiation ventilation grooves, a heat radiator bottom plate, a round fixing post and a concentrating photovoltaic photoelectric conversion receiver installing region, wherein one side of the heat radiator bottom plate is provided with the strip section staggered heat radiation fin section sheet array; the other side of the heat radiator bottom plate is provided with the round fixing post and the concentrating photovoltaic photoelectric conversion receiver installing region; gaps among heat radiation fin section sheets of the strip section staggered type heat radiation fin section sheet array are the heat radiation ventilation grooves; the heat radiator can utilize natural air in different directions to radiate heat in the middle inside heat radiation fins. The heat radiator has the advantages that the installation efficiency is very high; the installing cost is greatly reduced; during the subsequent repair and replacement of the heat radiator, great convenience is realized; the heat radiator can be directly screwed to a concentrating photovoltaic assembly base.