The work aims to establish the principles and strategies of font design of screen readable Chinese characters for the elderly, and to design screen displayed Chinese characters that meet the visual characteristics of the elderly. Through inter group experiments, the correlation between visual perception of the elderly and the stroke shape, central position, proportioned layout and barycenter of Chinese fonts was analyzed. Based on this, elderly-oriented design practices were conducted for screen displayed Chinese characters, and the rationality of the design was verified. The principles and strategies of font design of Chinese characters on screen for the elderly were constructed, and the readability of Chinese characters on screen for the elderly was effectively improved. The research results provided a theory and method for font design of Chinese characters on screen for the elderly. Reading Chinese characters on screen for the elderly is a complex process of attention, memory, and discrimination. Based on visual perception theory, questionnaires, experiments, and controlling the key factors of Chinese character font structure, a feasible and operable design method for Chinese character aging adaptation is proposed. The pen shape of Chinese characters should adopt a non decorative serif and an enlarged central position of Chinese characters, and ensure that the black and white relationship of the font and the layout of the font are appropriate.