The utility model relates to an atomizing sheet, which comprises a plate body, a plurality of atomizing through holes and an annular oscillating part.Each atomizing through hole penetrates the plate body and comprises at least one channel, a liquid concave hole and an atomizing concave hole.The liquid concave hole is concave on the first surface.The atomizing concave hole is concave on the second surface.The liquid cavity is communicated to the atomization cavity through a channel.Among them, the aperture of each liquid cavity gradually shrinks from the first surface to the connected channel, and each atomization cavity gradually shrinks from the second surface to the connected channel.The annular oscillating member is arranged on the second surface and around the atomizing through hole.一種霧化片，其包含板體、複數霧化貫孔以及環形振盪件。各霧化貫孔貫穿板體，且包含至少一通道、液體凹孔以及霧化凹孔。液體凹孔內凹於第一表面上。霧化凹孔內凹於第二表面上。液體凹孔經由通道連通到霧化凹孔。其中，各液體凹孔的孔徑自第一表面漸縮至其所連通的通道，以及各霧化凹孔自第二表面漸縮至其所連通的通道。環形振盪件設於第二表面，並圍繞於霧化貫孔的周圍。
