For actual voting, the most important thing is voter privacy. Ring signatures widely used in electronic voting protocols to protect voter privacy due to unconditional confidentiality. It has been found that electronic signature protocols based on mathematical complexity are not secure. We propose an electronic voting protocol based on quantum ring signatures. The generalized GHZ state is prepared and distributed by a trusted third party (TTP), so that all users in the ring can effectively act as voters or verifiers. Users in the ring and TTP use quantum key distribution technology to share keys and encrypt messages. The entire protocol uses one-time secret technology to further enhance the security of the voting process.