The utility model discloses a small-box transparent paper packing machine cigarette packet steering wheel box lacking detection device, comprising a photoelectric sensor and a synchronous sensor, the photoelectric sensor is installed on a metal baffle plate of a cigarette packet compensator support, and detects the upper part of a cigarette packet via permeating the metal baffle plate; the synchronous sensor is installed on a main transmission shaft at the lower part of a cigarette packet steering wheel, the main transmission shaft is provided with a cam; the signal output terminal of the photoelectric sensor and the signal output terminal of the synchronous sensor are both connected with the signal input terminal of a control unit of a small-box transparent paper packing machine; and the shift rejecting signal output terminal of the control unit is connected with the signal control terminal of a shift rejecting device of the small-box transparent paper packing machine. The box lacking detection device can reject cigarette packets not well complemented, thereby guaranteeing product quality and reducing market feedback.