This paper deals with minimizing warpage and sink mark depth in injection-molded thermoplastics components. Automobile glove box housing trim assembled on the instrument panel was chosen as an experimental model. In these experiments, the Taguchi method and FE analysis were used to research minimizing the warpage and sink mark depth. The most influential factor was found out by using Taguchi method. Through interaction parameters experiments put into practice through Moldflow software, the interaction between each factors has been researched. The optimization packing condition for minimization of the warpage and sink mark depth was designed.