The invention discloses a horizontal pushing device for a glycated hemoglobin analyzer for accurately controlling a test tube rack in place. The horizontal pushing device is provided with a horizontalpushing positioning and fixing plate (1), wherein the horizontal pushing positioning and fixing plate (1) is arranged on a sliding rail (2) and is connected with a first toothed belt (4) driven by afirst stepping motor (3); a front end of the horizontal pushing positioning and fixing plate (1) is connected with a horizontal pushing clamping and positioning block (5); a second stepping motor (6)is fixed at a rear end of the horizontal pushing positioning and fixing plate (1); the second stepping motor (6) drives a toothed pulley (8) by a second toothed belt (7); the toothed pulley (8) is coaxially connected with an eccentric wheel (9); a sensor chip (10) is fixed on one side of the sliding rail (2); and an output signal of the sensor chip (10) is used for controlling the first stepping motor (3).