Abstract: A wireless-linked online transaction system is proposed, which is designed for use with a portable intelligent electronic device, and which is characterized by the use of an advertising-side unit embodied in the form of an RFID chip to store a set of wireless Web page data and code and mounted on an advertising medium for the purpose of allowing the user of a portable intelligent electronic device to be capable of downloading the data and code stored in the RFID chip in a wireless method into the portable intelligent electronic device, so that the user is able to carry out an online transaction procedure through the downloaded Web page. This feature allows the user to conveniently and immediately make an online transaction through his/her portable intelligent electronic device right after the user sees the advertisement of a new product or service.