To provide a GPS receiving antenna which is surely attracted by a magnet and which is stable to mount.

In the GPS receiving antenna, an elastic arm 2g which is coupled to a lower case 2 and which has flexibility, is provided in the case 2, and the magnet 11 is adhered to the arm 2g and mounted in a state in which the magnet 11 is housed in the recess 2e of the case 2. Accordingly, at the time of mounting on a roof, the magnet 11 can be moved against springiness of the arm 2g. Thus, even when the magnet 11 or the recess 2e has unevenness at the time of manufacturing, the unevenness can be absorbed, and hence the GPS receiving antenna can be surely mounted.