The invention discloses an intelligent iris payment machine. The payment machine comprises a machine body, a contact control display screen, an iris identifier, a bar code scanning device, an union pay card jack, a ticket printing opening, a two-dimensional module and a payment module, wherein the contact control display screen, the iris identifier, the bar code scanning device, the union pay card jack, the ticket printing opening, the two-dimensional module and the payment module are installed on the machine body. The iris identifier comprises an iris image obtaining module, an identifying algorithm module, a characteristic extracting module, a coding module, an iris database, a data matching module and an iris identifying mobile end. The bar code scanning device comprises an infrared control emission module, a light filtering module, an infrared receiving module, a signal amplifier, a decoding module and a mechanical path assembly. The invention provides an intelligent iris payment machine and a payment method, so customers can carry out automatic acquisition of product data based on bar code data of selected products; the payment machine and the payment method support automatic payment of the customers; payment efficiency of supermarkets can be increased; queuing length of the supermarkets can be reduced to the greatest extent; and safety of payment is greatly improved.