The invention discloses a moisturized hygienic small packet cigarette label paper folding mechanism based on a cigarette packet forming turret. A cigarette packet two top angle folding part, a cigarette packet bottom face folding part, a cigarette packet two angle-angle folding part and a cigarette packet two side folding part are arranged according to movement sequence. The folding mechanism fully utilizes the power source of an original small packet packaging machine and the intermittent rotated packaging forming turret, an arc-shaped baffle corresponding to edge of the packaging forming turret and a swinging edge shoveling plate of the an edge shoveling mechanism matched with the arc-shaped baffle, folding of the novel moisturized hygienic small packet cigarette label paper is achieved,and an important condition is created for novel small packets being put into the market. The small packet cigarette label paper folding mechanism is conveniently installed and used in an existing cigarette small packet packaging machine, and has the outstanding advantages of compact structure and reliable operation.