In order to construct quantum secret sharing protocols among many parts,a Nparticle entangled state that has a large persistency of entanglement is introduced,and a quantum secret sharing protocol between one party and （N－1） parties is presented using the proposed entangled state.During constructing secret sharing,Alice chooses randomly unitary operation I or σx for the sent particles,and chooses a part of the particles to check the safeness of channel; then Alice chooses another part of the particles to check the honesty of partners and the safeness of channel by the operations of (N－1) parties.The protocol carries on examination to the eavesdropper for many times,so that it can insure the safeness of channel and the usability of the secret strings.Finally,there are n［1－(N－1)/2 N－1］/6 sharing secret bits among Alice and （N－1）parties.