A device for thermal analysis comprising: a pair of sample container assembly sets including a first sample container assembly and a second sample container assembly, in each of which a sample container (1, 3) and a heat sink (2, 4) are connected using a member (5, 6) having a predetermined thermal resistance; a heating unit for equally heating the pair of sample container assembly sets, wherein the heating unit has a cylindrical shape, and wherein the sample containers (1, 3) and the heat sinks (2, 4) of the pair of sample container assembly sets are equidistant from a cylindrical wall surface of the heating unit; a temperature control unit for controlling the temperature of the heating unit; a weight measurement unit for measuring the weight difference between a sample in the sample container of the first sample container assembly and a reference material in the sample container of the second sample container assembly; and a temperature measurement unit for measuring the temperature difference between the temperature difference between the sample container and the heat sink of the first sample container assembly and the temperature difference between the sample container and the heat sink of the second sample container assembly, wherein the temperature control unit is adapted to change the temperature of the heating unit, and the weight measurement unit is adapted to measure the weight difference while the temperature of the heating unit is changed, and the temperature measurement unit is adapted to measure the temperature difference while the temperature of the heating unit is changed, wherein the sample container of the first sample container assembly and the sample container of the second sample container assembly are placed at axially symmetrical positions with respect to the center axis of the cylindrical shape, wherein the heat sink of the first sample container assembly and the heat sink of the second sample container assembly are placed at axially symmetrical positions with respect to the center axis of the cylindrical shape, and wherein the heat sinks (2, 4) are placed at the same height as the sample containers (1, 3) and wherein the sample containers (1, 3) and the heat sinks (2, 4) are all placed equidistant from the center axis of the cylindrical shape. a pair of sample container assembly sets including a first sample container assembly and a second sample container assembly, in each of which a sample container (1, 3) and a heat sink (2, 4) are connected using a member (5, 6) having a predetermined thermal resistance; a heating unit for equally heating the pair of sample container assembly sets, wherein the heating unit has a cylindrical shape, and wherein the sample containers (1, 3) and the heat sinks (2, 4) of the pair of sample container assembly sets are equidistant from a cylindrical wall surface of the heating unit; a temperature control unit for controlling the temperature of the heating unit; a weight measurement unit for measuring the weight difference between a sample in the sample container of the first sample container assembly and a reference material in the sample container of the second sample container assembly; and a temperature measurement unit for measuring the temperature difference between the temperature difference between the sample container and the heat sink of the first sample container assembly and the temperature difference between the sample container and the heat sink of the second sample container assembly, wherein the temperature control unit is adapted to change the temperature of the heating unit, and the weight measurement unit is adapted to measure the weight difference while the temperature of the heating unit is changed, and the temperature measurement unit is adapted to measure the temperature difference while the temperature of the heating unit is changed, wherein the sample container of the first sample container assembly and the sample container of the second sample container assembly are placed at axially symmetrical positions with respect to the center axis of the cylindrical shape, wherein the heat sink of the first sample container assembly and the heat sink of the second sample container assembly are placed at axially symmetrical positions with respect to the center axis of the cylindrical shape, and wherein the heat sinks (2, 4) are placed at the same height as the sample containers (1, 3) and wherein the sample containers (1, 3) and the heat sinks (2, 4) are all placed equidistant from the center axis of the cylindrical shape.