A laminated heat exchanger including an inlet header having refrigerant passages therein through which a refrigerant to be cooled is fed, an outlet header having refrigerant passages therein through which the cooled refrigerant is discharged, a radiating laminated structure located between the inlet header and the outlet header, the radiating laminated structure being formed by alternately arranging a plurality of refrigerant tubes and fins in layers, each of the refrigerant tubes having a tank section for storing a refrigerant and a passage section in which the refrigerant stored in the tank section is circulated, and a distributing member located in at least one of the refrigerant passages of the inlet header and the outlet header and used to regulate a flow of the refrigerant in the tank section.