A doorbell device including upper case, elastic component, and button module is provided. The upper case has an outer surface, first annular-holding surface disposed opposite to the outer surface, first opening and annular trench. The first annular-holding surface surrounds the first opening. The annular trench surrounds the first annular-holding surface. The elastic component has first fastening protrusion and flexible-carrier layer surrounded and connected by the first fastening protrusion. The button module has a second annular-holding surface, first bottom surface, and pressing surface disposed opposite to the first bottom surface. The first fastening protrusion is interference fit with the annular trench. The button module is disposed on the flexible-carrier layer. At least a part of the first bottom surface is facing the flexible-carrier layer. The button module surrounded by the second annular-holding surface corresponds to the first opening, and the second annular-holding surface is facing the first annular-holding surface.