The structure of the opening machine is composed of a feeding part, an opening part, a material transfer part and a transmission part. The opener pressing roller is a pair of metal rollers with smooth surface. The front pressing roller is in close contact with the rear pressing roller by the spring. Relying on the spring action of the pressing roller and the weight of the pressing roller itself, the noodles are subject to a certain pressure when they pass, thereby increasing the density of the fines and reducing it The trapped sliver is fluffy and sticky. Due to its compactness, the capacity of the sliver in the elliptical sliver can be refined, and the strength of the sliver can be lifted away, reducing accidental stretching and end breakage in the next process.