In order to break the traditional way to update the LED content and data transmission range restrictions, the Tencent QQ link platform and Light Emitting Diode (LED) dot matrix display are combined in this study, an innovative LED display is designed. In this design, users can send the text message by QQ client in the mobile phone, and the message is sent through the software of QQ client, QQ cloud, and the QQ board, and then displayed in the LED display after series of message processes and communications in LED board. Therefore, the information in the LED display can be updated in real time. This design is the typical application of the Internet of Things (IoT) technology, and is valuable in terms of intelligent hardware design.