The invention discloses a mobile financial
management system based on a cloud service and a transaction method. By utilizing the existing safest
USB key identity
authentication, a
bank USB key
chip and a user edition mobile terminal are combined together to form a customized user edition mobile terminal, so that the terminal has a
USB key identity
authentication function; USB key identity
authentication is provided for a user to form
payment information subjected to USB key identity authentication; then a cloud
end system and a
bank system are combined to authenticate the
payment information subjected to USB key identity authentication so as to fulfill the aim of safe
payment; and moreover, a safe
bank USB key
chip is installed in a customized edition user
terminal system, and thus, a financial product
purchasing activity can be completed instantaneously, is not limited to time and space, and is more convenient and rapid. Meanwhile, according to the mobile financial
management system and the transaction method which are disclosed by the invention, by arranging a merchant edition terminal and a housekeeper edition terminal, information interaction among a bank worker, a user and a merchant is formed, and an effective
communication channel is provided for three objects.