The invention relates to a device (1) for massaging muscles in the oral cavity comprising a body (3) with drive means (5) and a power unit (7), an extending element (9) detachably coupled to the body (3), and two massage units (11) coupled to an end portion (13) of the extending element (9), wherein the massage units (11) operate with an alternately rotating movement, which rotates about a rotational axis (15) essentially perpendicular to the end portion (13). The invention further relates to a method for massaging muscles in the oral cavity such a device (1), wherein the massage units (11) massage the muscles in the oral cavity with an alternately rotating movement. Even further, the method may be used for reducing or eliminating snoring by massaging muscles in the oral cavity using such a device (1).