A torque sensor unit comprising: a first rolling bearing including a first inner race and a first outer race; a second rolling bearing including a second inner race and a second outer race; a housing having an inner peripheral portion to which the first outer race and the second outer race are fitted; a shaft member having an outer peripheral portion to which the first inner race and the second inner race are fixed such that the first inner race and the second inner race rotates together with the shaft member, and two end portions (42a, 42b) exposed to outside in an axial direction; a bearing restricting means restricting axial positions of the first rolling bearing and the second rolling bearing; the torque sensor unit being characterized by a first magnetic angle sensor fixed to the first rolling bearing and configured to convert an absolute rotation angle of the first inner race when the shaft member is twisted to a first output signal; a second magnetic angle sensor fixed to the second rolling bearing and configured to convert an absolute rotation angle of the second inner race when the shaft member is twisted to a second output signal, wherein each of the first magnetic angle sensor and the second magnetic angle sensor includes a magnet (61, 71) and a magnetic sensor element (62, 72), and wherein the magnets (61, 71) of the first and second magnetic angle sensors (60, 70) are mounted, respectively, to the first and second inner races (11, 21), and the magnetic sensor elements (62, 72) of the first and second magnetic angle sensors (60, 70) are mounted, respectively, to the first and second outer races (12, 22), wherein the torque sensor unit further comprises a computing/processing unit capable of calculating the torque value based on the difference in output between the first magnetic angle sensor and the second magnetic angle sensor. a first rolling bearing including a first inner race and a first outer race; a second rolling bearing including a second inner race and a second outer race; a housing having an inner peripheral portion to which the first outer race and the second outer race are fitted; a shaft member having an outer peripheral portion to which the first inner race and the second inner race are fixed such that the first inner race and the second inner race rotates together with the shaft member, and two end portions (42a, 42b) exposed to outside in an axial direction; a bearing restricting means restricting axial positions of the first rolling bearing and the second rolling bearing; the torque sensor unit being characterized by a first magnetic angle sensor fixed to the first rolling bearing and configured to convert an absolute rotation angle of the first inner race when the shaft member is twisted to a first output signal; a second magnetic angle sensor fixed to the second rolling bearing and configured to convert an absolute rotation angle of the second inner race when the shaft member is twisted to a second output signal, wherein each of the first magnetic angle sensor and the second magnetic angle sensor includes a magnet (61, 71) and a magnetic sensor element (62, 72), and wherein the magnets (61, 71) of the first and second magnetic angle sensors (60, 70) are mounted, respectively, to the first and second inner races (11, 21), and the magnetic sensor elements (62, 72) of the first and second magnetic angle sensors (60, 70) are mounted, respectively, to the first and second outer races (12, 22), wherein the torque sensor unit further comprises a computing/processing unit capable of calculating the torque value based on the difference in output between the first magnetic angle sensor and the second magnetic angle sensor.