The utility model relates to a replaceable atomizing module and an atomizer with a reverse cleaning function, which can include a nozzle, a liquid chamber and an atomizing module.The spray head can include a holding groove and a mist outlet pipe.The liquid containing chamber may include an opening, which may be arranged in the nozzle and may contain liquid.The atomization module can be connected with the mist outlet pipe, and can include a shell and a vibrating plate. The vibrating plate can be arranged in the shell, and can include a orifice plate. The rear surface and the front surface of the orifice plate can be exposed in the shell. The atomization module can be separately arranged in the holding groove, so that the rear surface or the front surface covers the opening. The vibrating plate can vibrate to generate the atomized liquid and eject it from the mist outlet pipe. The atomizing module can be replaced or discarded by the atomizer, and the reverse cleaning function can be performed.一種可更換霧化模組及具逆向清洗功能之霧化器，其可包含噴頭、液體容室及霧化模組。噴頭可包含容置槽及出霧管。液體容室可包含開口，液體容室可設置於噴頭中，並可容置液體。霧化模組可與出霧管連接，並可包含殼體及振動片，振動片可設置於殼體中，並可包含噴孔片，噴孔片之後表面及前表面可外露於殼體，霧化模組可分離地設置於容置槽中，使後表面或前表面覆蓋該開口，而振動片可振動以霧化液體產生霧化液體並由出霧管噴出，藉此使霧化模組可由霧化器更換或拋棄，並可執行逆向清洗功能。
