Does the new rural cooperative medical system need to cancel the existing social security card?

No need. There is no conflict between the handling of the new rural cooperative medical system and the participation of social security cards. They can be handled together and used together. They will not conflict with each other and will not affect each other in reimbursement. Therefore, there is no need to cancel the existing social security cards when handling the new rural cooperative medical system. The materials needed for handling the new rural cooperative medical system are the household registration book of the parties, the original ID card of the second generation residents and a copy of the ID card, and then submit the application to the local village committee for review and report.