The main goal of doing this dissertation is the calculationof the form factors and branchin ratio of the decay. For this aim, we use the AdS/QCD. In QCD suggested a "Schr?dinger-like" equation for a vector meson in a vector function in a dimansion AdS space with this Schr?dinger equation in the dimansion space. According to the AdS/QCD correspondence, we can match the equation of motion of a vector field in the space with this “Schr?dinger -like” equation in the dimaion space. In this approach, the potential energy function is simply obtained. y solving the “Schr?dinger–like” equation, we can estinate the distribution amplitiude of the vector meson and finally determine the transition form factors.