Abstract: A mole chaser, which comprises a main stem, a cap, a battery chamber, and an audio frequency circuit; the main stem and the cap are fastened together with threads, whereby battery chamber and the audio frequency circuit can be sealed in the main stem. The lower end of the main stem has a point end to facilitate the main stem to be planted in ground. The audio vibration signal is to be sent out through the main stem to chase moles. Through the special design of the battery chamber, the whole chaser becomes simple in structure, such as the battery chamber can be pulled out easily for replacing battery, and the main stem can be closed and sealed with the cap to become waterproof.