Uniform complex particles of polytetrafluoroethylene (PTFE)/carbon black (CB) were firstly hetero-coagulated without additives of non-ionic surfactant by mechanical stirring. Then composites of PTFE/CB with better properties were successfully prepared via cold pressing and sintering method with complex particles of PTFE/CB as raw material. The effect of sintering temperature and the CB amount on properties of composites PTFE/CB was investigated. Results show that the optimum sintering temperature was 390^oC, and the mechanical properties of composite PTFE/CB sintered at 390^oC exhibited significantly better mechanical properties due to the formation of good micro-fibrous structure. Among others, with the CB addition of 2 mass%, the composite exhibited the best mechanical properties, i.e. its tensile strength increased from 19.1 MPa to 27.3 MPa and the elongation at break increased from 420% to 525%. Importantly, the electrical conductivity could reach the percolation threshold for the composite with 3 mass % CB due to the formation of a conductive network in the PTFE/CB matrix. Therefore, it follows that the composite of PTFE with 3 mass % CB can possess high degree of crystallinity with appropriate antistatic performance.