Carbon fiber reinforced composites have all the ideal properties, leading to their rapid development and successful use for many applications over the last decade. In this paper, short carbon fiber reinforced Polytetrafluoroethylene (SCF/PTFE) composite were prepared with melt blending and hot-pressing techniques. The mechanical properties of this composite were investigated taking into account the combined effect of mean fiber length. Finally it can be shown that an increase in fiber length can enhance the mechanical properties of CF/PTFE composites. The fracture surface of PTFE composite was examined by SEM, to identify the topography of outside force.