As an amorphous material with high optical transparency,high thermal and chemical stability,high melting point and low coefficient of thermal expansion,glass is widely used in optics,biology,medicine and other fields. With the increasingly high requirements for the structure,material distribution and functional properties,traditional glass material processing methods (such as casting,blowing,floating,etc.) are difficult or even impossible to meet the above requirements. The emergence of 3D printing technology has subverted the traditional material forming process,which is based on the manufacturing principle of layer-by-layer accumulation,and theoretically can realize the digital forming of any complex components,with no molds,forming efficiency and other advantages. 3D printing technology has been widely concerned by the scholars in the field of glass material forming and manufacturing. This review systematically summarizes the 3D printing processes,principles,and their advantages and disadvantages for glass materials. Discussions are then presented on the applications of 3D printing glass materials. Finally,the future development is presented for the 3D printing technology of glass materials.