Abstract: Secret sharing refers to the method for distributing a secret amongst a group of participants,and the secret can be reconstructed only when a sufficient number of shares are combined together,it can ensure the information secure and data protection in cloud computing.This paper proposes a new quantum secret sharing protocol without particle entangled state,which can guarantee unconditional security by using quantum one-time pads,quantum key cryptosystem and the technique of comparing two unknown quantum states.This protocol has following advantages: compile with traditional secret sharing,the new scheme can resist the Shor algorithm by using of quantum communication technology;without particle entangled state,the protocol can reduce the complexity of implementation;if there exists attacker or malicious participant,the new protocol can discover the situation,and it can avoid recover the wrong secret.