The invention relates to a glass atomizing core used for electronic cigarette, comprising a glass chamber, an atomizing bracket and an atomizing core arranged in sequence from outside to inside, an upper end of the glass chamber is clamped with an adduction silicone cover, a lower end thereof is arranged with a steel sleeve, an electrode is arranged on a lower end of the steel sleeve； the glass chamber is provided as a cannular shape, a concave notch is disposed on outer wall surface of a lower end thereof, a fixing ring is clamped with the notch, and the fixing ring is connected to the steel sleeve； the atomizing core is connected with a lower end of the atomizing bracket, an upper end of the atomizing core is wound with nonwovens, and a lower end thereof is sleeved with a ceramic silicone sleeve and electrically connected with the electrode.
