Reel label inspection machine

The invention provides a reel label inspection machine. According to the invention, the reel label inspection machine completes spray printing of double-side variable characters by using a variable character spray-printing system and realizes double-side detection (including detection of the variable characters) by using a double-side full-automatic detection system; at the same time, a code spraying unit, a detection unit and a cutting unit are combined together through certain association so as to form an integral device, thereby realizing synchronous accomplishment of spray printing of the double-side variable characters, double-sided detection and cutting.