This paper introduces the extrusion technology of fiber optic cable sheath.The advantages of two-color strip outer protection in the identification degree when multiple optical cables are laid in the same channel or in the same pipe are described.The characteristics of color strip optical cable and the method of color strip extrusion are briefly introduced.The production process

process improvement and possible problems in the production of double color fiber optic cable are introduced in detail.Finally

the future development direction and prospect of color fiber optic cable are analyzed.