The utility model relates to a solar collector with focusing elements, in particular to a high-capacity combined Fresnel linear-concentration reflector with high concentration ratio. The high-capacity combined Fresnel linear-concentration reflector with high concentration ratio is structurally characterized in that a main reflector consists of a main reflecting lens formed by a plurality of micro-arc Fresnel reflecting lenses, a turning device is disposed at the center of each Fresnel reflecting lens, and the Fresnel reflecting lenses are located above a collector tube and are distributed in an arc form by centering on the collector tube. The high-capacity combined Fresnel linear-concentration reflector with high concentration ratio further comprises an auxiliary reflector. The auxiliary reflector is disposed below the collector tube, and an arc inner concave surface (or concentrating surface) of the auxiliary reflector faces to the collector tube. The high-capacity combined Fresnel linear-concentration reflector with high concentration ratio has the advantages that the Fresnel linear-concentration reflector can attain high surface utilization rate, incidence of sunlight is fully considered, sunlight loss is greatly decreased, effective focusing and even heating for the collector tube are achieved, and high-capacity focusing of the Fresnel linear-concentration reflector is achieved.