The invention discloses a collimating solar energy collector comprising a heat-collecting boiler and a plurality of light-collecting units arranged on the peripheral side of the heat-collecting boiler, wherein, a row of multiple light-ingoing holes in uniform distribution are arranged at the lower part of the heat-collecting boiler along the circumferential direction; the light-collecting units and the light-ingoing holes are identical in quantity, and the light-output holes of the light-collecting units are just opposite to the corresponding light-ingoing holes respectively; each light-collecting unit consists of a Fresnel lens which always carries out condensation by facing the sun directly, a fiber coupling element located at the lower focal point of the Fresnel lens, a fiber bundle connected with the fiber coupling element, and a fiber bundle collimator mounted at the light-output terminal of the fiber bundle and used for collimating the scattered light transmitted from the fiber bundle into a horizontal light bundle and outputting the horizontal light bundle. The invention has the advantages of novel and reasonable design, convenient manufacture and installation, low cost, good using effect, high light-heat conversion efficiency and wide application range; and the invention can effectively overcome various shortcomings in the existing solar energy collectors.