We have demonstrated the Autler-Townes (AT) splitting of the four-wave mixing (FWM) process and the six-wave mixing (SWM) process in an electromagnetically induced transparency (EIT) window in five-level atomic vapor of 87 Rb. Moreover, we discuss interactions of multi-dressed states. The experimental results agree well with the theoretical analysis.four-wave mixing, six-wave mixing, multi-dressed states, Autler-Townes splitting PACS: 42.56. ES, 42.65.Re,42.50.Ar, 42.65.Hw