A large amount of participate matter (PM) is emitted from a diesel engine. A feasibility study was carried out whether the PM from diesel engine can be applied as a new technology of carbon black manufacturing. As the first step of this study, the components of PM such as SOF, soot, sulfate and PM diameter were measured by means of an exhaust gas analyzer and a scanning mobility particle sizer (SMPS), respectively. The diameter distribution and total discharge of PM could be controlled by changing excess air ratio, number of revolutions and fuel additives.