The archtitecture of Qtopia and the establishment of cross-compiler development environment under Linux system are introduced in this paper.Then,the development framework and application program of electronic menu system are designed.The Graphical User Interfaces (GUI) based on Qtopia and displayed in Chinese,is developed and transplanted to ARM9 development board.The running result shows a friendly interface and smooth operation.Qtopia is employed as support environment of human-machine interface in embeded constant system application program,which greatly improve the operation efficiency of GUI and upgrade the product quality.