Developing an efficient and robust lightweight graphic user interface(GUI)for industry process monitoring is always a challenging task.Current implementation methods for embedded GUI are with the matters of real-time processing and ergonomics performance.To address the issue,an embedded lightweight GUI component library design method based on quasar technology embedded(Qt/E)is proposed.First,an entity-relationship(E-R)model for the GUI library is developed to define the functional framework and data coupling relations.Second,a cross-compilation environment is constructed,and the Qt/E shared library files are tailored to satisfy the requirements of embedded target systems.Third,by using the signal-slot communication interfaces,a message mapping mechanism that does not require a call-back pointer is developed,and the context switching performance is improved.According to the multi-thread method,the parallel task processing capabilities for data collection,calculation,and display are enhanced,and the real-time performance and robustness are guaranteed.Finally,the human-computer interaction process is optimized by a scrolling page method,and the ergonomics performance is verified by the industrial psychology methods.Two numerical cases and five industrial experiments show that the proposed method can increase real-time read-write correction ratios by more than 26％and 29％,compared with Windows-CE-GUI and Android-GUI,respectively.The component library can be tailored to 900 KB and supports 12 hardware platforms.The average session switch time can be controlled within 0.6 s and six key indexes for ergonomics are verified by different industrial applications.