This invention provides an atomizing unit comprises: a coil which is formed by a metal wire of spiral shape and has a shape extending along a predetermined direction a liquid maintaining member for maintaining aerosol source in the coil, a first contact which is electrically connected with a first pole of a power supply and a second contact which is electrically connected with a second pole of said power supply being disposed with an interval in the metal wire. The coil comprises a heating portion which is formed of the metal wire between the first contact and the second contact disposed in the metal wire which are closest to each other a first end portion which is formed of the metal wire at one outer side of the heating portion in the metal wire and a second end portion which is formed of the metal wire at the other outer side of the heating portion in the metal wire. In the orthogonal direction of the predetermined direction, at least a portion of the inner surface of the liquid maintaining member is such disposed as to be in contact or proximity with the heating portion.霧化單元係具備:線圈,藉由具有螺旋形狀的金屬線所形成,且具有沿著預定方向延伸的形狀;以及液體保持構件,保持氣膠源;在前述線圈中,係在前述金屬線上,隔著間隔地設置有與電源之第一極電性連接的第一接點、以及與前述電源之第二極電性連接的第二接點;前述線圈係具有:加熱部分,藉由在前述金屬線上被配置成彼此最近的前述第一接點與前述第二接點之間的金屬線所構成;第一端部分,藉由在前述金屬線上之前述加熱部分之一方外側的金屬線所構成;以及第二端部分,藉由在前述金屬線上之前述加熱部分之另一方外側的金屬線所構成;在前述預定方向的正交方向,前述液體保持構件之內側側面的至少一部分,係以接觸或接近前述加熱部分的方式配置。11‧‧‧貯存器12‧‧‧液體保持構件13‧‧‧發熱體13A‧‧‧加熱部分13B1‧‧‧第一端部分13B2‧‧‧第二端部分14‧‧‧筒狀構件141‧‧‧筒狀構件(第一筒狀構件)142‧‧‧筒狀構件(第二筒狀構件)15‧‧‧被覆構件16‧‧‧帽蓋17、171、172‧‧‧凸緣110X‧‧‧吸嘗器外殼111‧‧‧霧化單元111O‧‧‧吸口側開口111X‧‧‧霧化單元外殼130‧‧‧匣體130O‧‧‧出氣口131‧‧‧匣體外殼133A‧‧‧網格133B‧‧‧濾嘴A‧‧‧預定方向B‧‧‧正交方向
