A kind of protection structure; it protects a portable ultrasonic atomizer with what; wherein protection structure includes multiple protection locations; one of them of multiple protection locations has the elastomer of a protective and a connection what protective; wherein protective is arranged in a top cover body of portable ultrasonic atomizer; and in a gas vent of a part accommodating what top cover body of elastomer, with the gas vent of what closed roof body.一種保護結構,其用於保護一可攜式超音波霧化器,其中保護結構包括多個保護單元,多個保護單元的其中一個具有一保護體及一連接於保護體的彈性體,其中保護體設置在可攜式超音波霧化器的一頂蓋體上,且彈性體的一部分容置於頂蓋體的一排氣孔內,以用於封閉頂蓋體的排氣孔。