Quantum entanglement plays essential roles in quantum information processing.The monogamy and polygamy relations characterize the entanglement distributions in the multipartite systems.We present a class of monogamy inequalities related to theμ-th power of the entanglement measure based on Rényi-α entropy,as well as polygamy relations in terms of theμ-th power of Rényi-α entanglement of assistance.These monogamy and polygamy relations are shown to be tighter than the existing ones.