A water-repellent earphone is formed of a main body and a water-repellent breathable member. The main body includes a receiving space for accommodating a speaker. The speaker partitions the receiving space to make a rear chamber. The main body includes a drainage tunnel communication with a first opening and a second opening, both of which are located on an external surface of the main body. The main body further includes a venthole communicating with the drainage tunnel and the rear chamber. The water-repellent breathable member is formed and located at the venthole. In light of the structure mentioned above, the drainage tunnel can help the earphone quickly expel the moisture to prevent the moisture from damage to the speaker and to boost the frequency response and acoustic performance within the low-frequency range.