1, by the use of the environment and locations can be divided into indoor trunk cable, indoor wiring cable and indoor trunk cable three. Interior trunk cable is provided within the main building, between the outer channel; and indoor wiring cable and indoor trunk cable is used to pass information to each specific location. 2, according to the fiber core number can be divided into single, dual and multi-core three. Indoor cable typically contains 1-36 core, there are more than 36 large-core optical fiber core number, or even a large number of high-intensive core cable. Optical fiber cable has a single-mode fiber, multimode fiber, dispersion-shifted fiber and polarization maintaining fiber, it is possible to use plastic optical fiber. 3, divided by the fiber shape, biased type (B), a circular (E) and other shapes indoor cable (according to different environmental requirements radiation) 4, the optical fiber cable by dividing means in the position or the cable, a central beam tube style, twisted, frame type and stacked ribbon indoor cable tide over the crisis. 5, according to the jacket material points, there are flame retardant and indoor cable.