The servo cable has the characteristics of folding resistance, oil resistance, bending resistance, high flexibility and toughness. It is especially suitable for continuous moving applications, such as the installation and connection of drag chains and robots, and because the servo cable can have double shielding effect and strong anti-interference ability. The signal transmission line and the power supply cable are integrated into one, saving installation space, reducing the weight and maintaining the reliability and stability of the work. Therefore, it is suitable for: machine tool manufacturing, automobile manufacturing, complete equipment installation engineering, paper industry, heating and air conditioning systems, etc. occasion.