Abstract: The multinucleon transfer reaction processes of ^136\rmXe+^198\rmPt are investigated by using the ImQMD model. The TKE-Mass distributions of binary fragments at different contact time scales are analysed. It is found that the quasielastic collisions, the deep-inelastic collisions and the quasifission reactions can be roughly distinguished by the contact time. By analysing the double differential cross sections of the TLFs and the isotopic cross sections of Ba nuclei under the different contact time, we find that the neutron-rich nuclei are produced in the deep-inelastic collisions. In addition, the TLFs with emission angle around 0° are produced in central collisions for the reactions of ^136\rmXe+^198\rmPt.