To provide an installation structure for a vehicle wheel speed sensor, which eliminates a seal structure for reduction in the number of components and enhances design flexibility of the vehicle wheel speed sensor and a resin cover.

A vehicle comprises: a resin cover 14 which is installed on a wheel hub unit for rotatably supporting the shaft of a wheel hub for wheel fixation through a bearing; and a wheel speed sensor 13 which is disposed adjacent to a sensor ring 18 installed on the shaft of the wheel hub and is installed on the resin cover 14. An installation structure of the wheel speed sensor 13 of the vehicle comprises a thin wall part 14c of the resin cover 14 through which the wheel speed sensor 13 is oppositely arranged to the sensor ring 18. For example, the resin cover 14 is provided with a blind hole as a sensor insertion hole 14a, of which bottom opposed to the sensor ring 18 is provided with the thin wall part 14c, such that the wheel speed sensor 13 is inserted in the sensor insertion hole 14a.