The invention relates to an automatic glass combining device, which comprises two brackets, a turning plate, two sets of hydraulic elevator mechanisms, two sets of hydraulic rotating mechanisms and positioning elevator mechanisms. The sets of hydraulic elevator mechanisms of which tops are provided with the hydraulic rotating mechanisms respectively are arranged between the two brackets symmetrically; a rotating shaft is connected between the two sets of hydraulic rotating mechanisms, and is connected with the turning plate; the positioning elevator mechanisms are arranged in the two brackets; a base of the bracket is provided with a sucker elevator mechanism and the sucker elevator mechanism is provided with a plurality of suckers which suck a lower glass template; and one side of the turning plate is provided with a plurality of suckers which suck an upper glass template. The glass combining device realizes automatic glass entry, adjustment for the glass combining position and glasscombining by matching the hydraulic elevator mechanisms, the hydraulic rotating mechanisms with the positioning elevator mechanisms; the combining process of the glass templates is controlled by a PLC system; and the automatic glass combining device has the advantages of high degree of automation, high work efficiency, the stable glass combining position of the upper and lower glass templates andhigh finished product ratio of organic glass casting after glass combining.