This article deals with the study of the morphology of glass bead (10% in volume) reinforced compatibilized blends of polypropylene (PP) and polyamide (PA) 6.6. The morphology, as well as some physical and mechanical properties, are determined. The blends are studied in relation with the PP-PA ratio and according to the glass bead's sizing. We have seen the existence of a boundary PA-glass beads interface (independently of the sizing), and the best compatibilization effect is obtained with PP size glass beads and for 50% PP content.