X-ray emission,as one of the important consequential results from ion-atom collision,carries the important information of several inner-shell processes as primary ionization,vacancy decay and intra-atomic excitation,which provides a valid method to investigate the particle properties and the complex interaction mechanism.In our previous work,such multiple ionization of projectile has been observed and the effect of incident energy was verified 30.Here,we would like to present the further plan in which a special attention is going to focus on the dependence of multiple ionization on projectile charge state and target atomic number.