If you mean SWIFT code like what Vera said, then it is a unique Bank Identifier Code given to a bank, primarily to facilitate international wire transfers between banks. Think of it as something like your QQ number or MSN address, but in this case it is a specific code assigned to each bank or bank branch to quickly identify which banking group it belongs to, which country and which specific location it is in.

Is it Swift Code? SWIFT=Society for Worldwide Interbank Financial Telecommu-nication