An earplug apparatus comprises a center pillar and a first umbrella wing. The center pillar comprises a handheld section and a core stem section formed at one end of the handheld section. The first umbrella wing comprises an inner edge away from the handheld section and surrounding and connecting with the core stem section, an outer edge near the handheld section and surrounding the outer perimeter of the core stem section with an interval to the core stem section, and an outer circumferential surface connected with the inner edge and the outer edge. The outer circumferential surface has a plurality of first grooves that are separated from each other with an angle. Each of the first grooves is extended from the inner edge in a direction toward the outer edge and is in communication with the inner edge but not with the outer edge. While plugging into the ear, the present invention utilizes the design of the first grooves to enable air inside the ear to flow out of the ear through the first grooves, so as to keep the balance of ear pressure in the ear without feeling stuffy, and the first umbrella wing may be tightly plugged into the ear without being pushed off by air pressure, such that the present invention may achieve excellent usability.一種耳塞裝置，包含一支中心柱，及一個第一傘翼。該中心柱包括一個手持段，及一個形成於該手持段之一端的芯桿段。該第一傘翼包括一個遠離該手持段且圈圍連接該芯桿段的內端緣、一個鄰近該手持段且與該芯桿段相間隔地圍繞於該芯桿段外圍的外端緣，及一個連接該內端緣與該外端緣的外周面，該外周面具有數個彼此角度間隔的第一溝槽部，每一個第一溝槽部由該內端緣往該外端緣的方向延伸，且連通該內端緣而不連通該外端緣。在塞入耳朵時，能藉由該等第一溝槽部的設計，使得耳內的空氣通過該等第一溝槽部流出耳外，保持耳內的耳壓平衡而不會氣悶，以便於該第一傘翼緊密地塞入耳內且不致被氣壓反推掉落，可具有優良的使用性。
