The purpose of this research is trying to explore the applicability of the robust likelihood methodology introduced by Royall and Tsou (2003) to the generalized partial linear models. We adopt the poission distribution as the working model when the data is dependent to develop robust likelihood function for the regression parameters in GPLM. We showed details of the derivations of the adjustments that properly amends the working likelihood function. The efficacy of the proposed parametric robust method is demonstrated via simulation studies. It is shown that robust likelihood approach is effective even in irregularity situations caused by the components of the smooth function.