To provide a constant velocity universal joint with a temperature sensor capable of knowing temperature during use of the constant velocity universal joint and utilizing the same for monitoring irregularity of the constant velocity universal joint or the like.

This constant velocity universal joint 3 with the temperature sensor is a constant velocity universal joint including a pair of joint members 5 rotating and transmitting each other provided with a means 12 monitoring temperature during use. In an embodiment, the means 12 is an infrared thermometer attached to a machine 13 on which the constant velocity universal joint is installed.