The composition of IBAN includes: the first two digits are the country code where the account number is located, the last two digits are the inspection number, the middle is the code of the receiving bank, and the last part is the basic account number. The use of IBAN improves the first-time rate of return of cross-border payment, and all euros paid to EU countries must be used in international bank accounts. Such as; IBAN is in Britain; Gb22barc60730000000001* * 22 digits, the first two GB stands for GRANDBRITISH, barc stands for the abbreviation of the payee bank, 607300 stands for the 6-digit SORTCODE number of the payee bank, and the last 8 digits stand for the payee account number.