Heat-collecting receiver, and solar thermal power generation apparatus

Provided is a heat-collecting receiver which is irradiated with sunlight via heliostats, and which is capable of efficiently absorbing said sunlight, and converting said sunlight into heat. This heat-collecting receiver is used in a solar thermal power generation apparatus, and comprises: a plurality of heat-absorption bodies each having, provided side by side in a ceramic substrate therein, a plurality of passages through which a heat medium is made to pass; a support body which accommodates and supports the heat-absorption bodies, and which causes the heat medium to circulate; and adhesive layers which adhere the plurality of heat-absorption bodies together, and which adhere and fix the plurality of heat-adsorption bodies to an inner wall of the support body. The heat-collecting receiver is characterized in that: each of the heat-absorption bodies is arranged such that one end surface thereof at which the passages are exposed forms a light-reception surface for receiving sunlight; and light-reception-surface-side ends of the adhesive layers are located further inside than any of the light-reception surfaces of adjacent heat-absorption bodies.