An eardrum incision device includes a main body, a replaceable inserting portion, a display unit. The replaceable inserting portion is detachably connected to the main body. The replaceable inserting portion has an insertion end located at a side far away from the main body and adapted to be inserted into an ear canal of a user. The replaceable inserting portion includes an image-capturing unit, a mounting hole and a replaceable incision component. The image-capturing unit is disposed at the insertion end. The mounting hole is disposed in the inserting portion and extended toward the main body. The replaceable incision component is removably disposed in the mounting hole and adapted to pierce out of the mounting hole along a direction toward the insertion end, so as to incise the eardrum of the user. The display unit is disposed on the main body and electrically connected to the image-capturing unit.一種耳膜穿刺裝置包括主體、可置換式插入部以及顯示單元。可置換插入部可拆卸地連接主體。可置換式插入部具有插入端，其位於遠離主體的一端，並且可置換式插入部適於插入使用者的耳道中。可置換式插入部包括影像擷取單元、組裝孔以及可置換式穿刺件。影像擷取單元配置於插入端。組裝孔由插入端朝主體的方向延伸。可置換式穿刺件可移除地配置於組裝孔中，並且適於朝插入端的方向穿出組裝孔，以對使用者的耳膜進行穿刺。顯示單元配置於該主體上並且電性連接影像擷取單元，以顯示影像擷取單元的所擷取的影像。
