The project aims on studying the concept of augmented reality that applies on ecotourism of the active aging group by interpretive signs. The objectives are to understand the demand of carrying along technological products by the active aging group during ecotourism, and to raise the concept of augmented reality and apply to a mock contextual on interpretive signs in ecotourism of the active aging group. The procedure of the study is divided into two parts: (1) By undercover observation and interviews as well as workshops participation, the demand of carrying technological products by the active aging group in ecotourism can be figured out. (2) Build up prototypes of interpretive signs with augmented reality applied along with an evaluation of usage, the result will be stimulated to the mock contextual. Results showed that the variety of technological products carried includes: smart phones, non-smart phones, digital cameras and tablets, etc. Demands include: (1)the demand of recording; (2) the demand of safety; (3) the demand of knowledge; (4) the demand of convenience; (5) the demand of sharing. According to the analysis on demands and evaluation on usage, the application of augmented reality on interpretive signs in ecotourism of active aging group is raised. The procedures are listed as below:(1) loading of the augmented reality system; (2) integration of mobile devices and interpretive signs; (3) contents of the augmented reality system; (4) sharing experience. The mock contextual foresees to enhance the experience of active aging group during ecotourism and an improvement of transforming aging group into active and optimistic ones is sincerely expected.