The new steam shrinking tunnel is designed for different irregular round bottles, square bottles and flat bottles. The steam pressure and flow rate are independently adjustable. The shrinking tunnel has the characteristics of shrinking the label, and the machine has uniquely nozzles is designed by high position and low position. The nozzles are adjusted according to different bottle types. The externally designed see-through window can observe the whole shrinking process, and the shrinking is divided into three sections of temperature zones, which can be adjusted according to the shrinking demand. The temperature of each segment of the shrinkage zone to achieve the best shrinkage effect. The unique import and export design make the steam to condense, so that it can prevent steam from leaking out. The design of the integral adjustable exhaust duct can adjust the amount of exhaust air according to the contraction of each section, and it can send the steam away under the action of the fan, which is beneficial to the working environment of the workshop.