Dynamic　rheological　properties　of　MC　nylon　6　and　its　composites　were　studied　by　Rheological　Testing　Machine.　The　results　show　with　the　increase　of　shearing　frequency,　the　dynamic　viscosity　(η′)　of　the　melt　of　MC　nylon　6　and　its　composites　decreases,　while　the　storage　modulus　(G)　and　loss　modulus　(G)　of　the　melt　increases　respectively　the　viscosity　of　the　MC　nylon　6　melt　increases　with　an　increase　of　fibers.　The　viscous　fluxion　of　MC　nylon　6　melt　has　priority　over　elastic　fluxion　at　low　shearing　frequency,　and　the　situation　is　reverse　at　high　shearing　frequency.　The　composites　melt　emerges　viscous　fluxion　only　and　they　has　the　similar　trend　of　G-ω　and　G-ω.　The　above　conclusion　could　also　be　attained　by　lgG-lgG　plots　and　is　significant　to　the　processing　and　properties　improvement　of　MC　nylon　6.