The present invention is automatic bank check selling device and aims at changing the manual selling status, which is time consuming, low in efficiency and high in labor strength. The device includes host computer, connected operation device, client information carrier reader, check number acquirer, check delivering mechanism, paging mechanism and magnetic code printing mechanism, and it may have marking mechanism, conveying mechanisms, code inspector, error check disposing mechanical and check selling mechanism as well as payment cipher printer. The present invention is suitable for automatic selling of transfer check, cash check, personal check, etc. as well as common bill.