[Objective]This study investigates the impacts of cell phone screen sizes and APPs on the students'reading efficiency of academic literature.[Methods]We conducted questionnaire surveys, interviews and experiments to analyze the reading time, understanding rate and memory rate of academic papers.[Results]Cell phone screen size posed significant effects to reading time and had no significant effect to reading comprehension and memory rates. The APP's user experience had impacts on reading comprehension, however, it posed no significant effect to reading time and memory rate.[Limitations]We had limited number of participants and need to improve the assessment method of reading comprehension and memory rates.[Conclusions]Screen size and APPs have different impacts on reading efficiency, which could be improved through optimizing the mobile devices and APP's user experience.