This research is discussing the polypropylene fiber (PP) wrapping up and winding the carbon fiber. We utilized the process of yarn folding to make the eletric conductive knitting film, and used the 3-dimensional characteristic of the knitting structure to make the high capacity and efficiency absorb of electromagnetic wave. From the research, the different angle location of carbon fiber knitting composite will influent the absoption of electromagnetic wave, and the compostie layer counts influence is also affect the absoption of electromagnetic wave. In this study, we match different needle specification, different layer counts, and different angle location of knitting film to make a electromagnetic wave absorb the material with high capacity and efficiency and wide frequency.