Abstarct: It has discovered in several past years , a new kind of matter named, quark glouon plasma in the RHIC labratuary of America and in LHC lab. It has provided a new field for researchers in string theory and particles physics. The process is that a beam of gold or lead ions accelerated in accelerators then collided together head to head. Then plasma created for a very short time. Observations showed that there was a shock wave in plasma. It has created a new field for physicist of particles. This is a strongly coupled plasma, so perturbation methods are inefficient, by this reason physicists used a new approach for study of it. This is AdS/CFT duality. Some people beleave that there has bean a phase in the early million'th times of Big-Bang in the QGP plasma state, thus human can achive a lot of data and informations about the creation of the world. In this research we used string theory. We assumed a quark and meson seperatedly and investigated their motion in QGP by ascribing an open string them. We used AdS/CFT duality.