The invention relates to a tempered glass testing and inspecting apparatus, and in particular relates to an improved glass inspection apparatus having a gear rotary table, a ring light camera and a titanium alloy stepped slot corner clamping plate. A transmission gear is also fixed on a rotary table rotating shaft at one side, and is cooperated with a hand-operated gear, the hand-operated gear is rotationally fixed on a hand-operated axle, an axle flange is arranged at the inner end of the hand-operated axle and is fixed on the outer side surface of a supporting side plate correspondingly, a clamp spring for a shaft is arranged at the outer end of the hand-operated axle and is stopped on the outer side surface of the hand-operated axle, a hand wheel stepped round is arranged on the outer side surface of the hand-operated gear, a hand wheel cross bar is fixedly connected on the hand wheel stepped round, a hand wheel crack handle is arranged at the outer end of the hand wheel cross bar, a rack hoisting camera set is arranged on a camera shooting square bar, a square fluorescent tube is arranged on a mobile light ring, an air cylinder impactor is fixed on an impacting cross bar in a sliding manner, a stepped rail clamping plate assembly is fixed on the upper plane of the testing rotating table, and quadrilateral glass having different included angles can be fixed by the stepped rail clamping plate assembly.