The invention relates to a glass-welded plane double-
low altitude-layer glass with edge sealed by sealing grooves and strips, which comprises an upper glass, a lower glass and an intermediate glass, the sealing strips are provided at lower surfaces of the upper glass and the intermediate glass, the seal groove and the sealing strips are arranged on the upper surface circumference of the intermediate glass and the lower glass, three glasses are rapidly heated, the circumference can be welded together by pressurizing through a glass solder in a
heating furnace, and two enclosing low-altitude
layers are formed between the upper glass and the intermediate glass as well as between the intermediate glass and the lower glass. The vacuum glass and its production method have the advantages that the process is simple and the production efficiency is high, the prepared vacuum glass can eliminate the stress of the sealed edge and can keep the
toughening characteristic of the
toughened glass, so that toughened vacuum glass can be massively produced, and its usage life is increased.