The automatic cap shrinking machine is designed for shrinking the bottle mouth labels of bottle shaped, can shaped, and barrel shaped cup-shaped products. Suitable for shrinking labels of glass bottles, plastic bottles, paper cups and other containers in industries such as food, medicine, cosmetics, pesticides, etc; Intelligent control of shrinkage temperature; The conveying speed is infinitely adjustable by an electronic speed controller; Unique conveying device ensures smooth conveying; 360 degree rotation heating ensures uniform contraction.