The polyfluorinated ethylene propylene (FEP)/polypropylene (PP) blend was compounded at melt state in a twin-screw extruder. The melt dynamic viscoelasticity of FEP/PP blends was measured using a Bohlin rheometer with the extended temperature option under experimental conditions with temperature scope from 270°C to 280°C and shear frequency () varying from 10^–2 to 10¹ s^–1. The results showed that the shear storage modulus (G') and shear loss modulus (G'') increased nonlinearly, while the dynamic complex viscosity (*) decreased slightly with increasing . The G' and G'' were an exponential function of . The G', G'', and * of the blend melts decreased with an addition of the PP weight fraction (PP), and the relationship between them might be expressed by a multinomial third-order equation. This phenomenon might be attributed to the difference in viscoelasticity between the FEP melt and PP melt. The value of tan of the blend melts achieved the maximum at about 10⁰ s^–1.