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The Cr2Nb-20Ti (atomic fraction) prepared by directional solidification with the withdrawal rates of 5, 10, 20, 100 μm/s were investigated to understand the microstructure evolution of the Laves phase Cr2Nb/Ti alloy. OM, XRD, and SEM apparatus were employed to determine the solidified phases and microstructure. The results indicate that the microstructures of directionally solidified Cr2Nb-20Ti alloy are all consisted of C15-Cr2Nb dendrite and interdendritic β-Ti. The formation of metastable β-Ti instead of stable α-Ti is induced by the stabilization of Cr element. With the increase in withdrawal rate and perturbation at the liquid/solid interface, the C15-Cr2Nb dendrites are refined and the dendritic morphology evolves from the petal-like pattern at 5 μm/s to the polygon-like pattern at 100 μm/s; simultaneously, the growth direction of the C15-Cr2Nb dendrite gradually deviates from the heat flow direction and transits to the preferred growth direction. From the XRD experimental result, it shows that the C15-Cr2Nb dendrite exhibits the (220) preferred growth plane due to the fact that the plane (220) has the maximal bare bond energy, leading to the fast growth kinetic and elimination of other growth planes