Abstract: PA6 was modified by self-made modifier of phenolic-montmorillonite (PF-MMT) and γ-aminpropyltriethoxysilane-halloysite (KH550-HNTs). The effects of different compound proportion on PA6 crystallization, thermal stability, water absorption and mechanical properties were studied. The results show that PA6 matrix composite system, modified by PF-MMT compound KH550-HNTs, whose thermal stability and resistance of water absorption are improved, and T_g is changed little, while the crystallinity of PF-MMT compound KH550-HNTs/PA6 is decreased. The rigidity of the system is enhanced, while toughness decreased a little. The bending strength has a considerable improvement, compared to pure PA6.