The invention relates to the field of liquid crystal substrate glass processing, in particular to glass breaking equipment. The glass breaking equipment comprises a machine frame (100) and a first breaking device (200) and a second breaking device (300) which are arranged on the machine frame (100) and used for alternately pressurizing the upper surface and the lower surface of glass (10) respectively, and further comprises a lug material supporting mechanism (400) which is arranged below a lug material (11) to be separated of the glass, is used for supporting the lug material (11) and can move away the lug material (11) when the lug material (11) is broken. Through arrangement of the lug material supporting mechanism, the glass breaking equipment can not only achieve the glass breaking function, but also solve the problem of glass sagging.