The invention relates to a technology for producing hollow glass, which comprises the following steps: glass to be processed is conveyed to a washer-drier by a glass conveyer; the clean degree of the glass surface is checked by checking the glass conveyer; when the first piece of glass is conveyed to a frame mounting machine, required aluminium bars or stainless steel bars are pasted on the first piece of glass; then the first piece of glass and the aluminium bars or the stainless steel bars are conveyed to a laminator, the board of the laminator is drawn back, a guide rod automatically goes down to guide a second piece of glass in the laminator, and the two pieces of glass are laminated together and simultaneously fed in a preforming machine; the glass pressed by the performing machine is fed in an output conveying table, small-sized glass is directly moved to a rotating table from the output conveying table, and large-sized glass is fed in an overturning table; and the large-sized glass is changed into horizontality from verticality by overturning. The invention has the beneficial effects that devices are monitored at any time and are repaired in time; an aviation plug is adopted to connect every two devices, which is easy to be repaired and maintained; the cost is saved, and the production efficiency is increased.