The invention has as an object providing a two-block heat exchanger that can improve the heat exchange capacity by distributing the refrigerant evenly in the refrigerant path. The invention is a two-block heat exchanger, and the refrigerant distribution part provides two separate refrigerant paths R1 and R2 through which the refrigerant flows and an opening provided at both of the respective ends of these refrigerant paths R1 and R1. Among the two refrigerant paths R1 and R2, the open end of the space Sout 1 (refrigerant circulation space) on the exit side formed by the one opening of the one refrigerant path R1 is connected to the open end of the space Sin 2 (refrigerant circulation space) on the entrance side formed by one opening of the other refrigerant path R2. After the refrigerant flows into the refrigerant path R1 of each refrigerant distribution part, and refrigerant flows through the refrigerant path R2 of each of the refrigerant distribution parts.