This study adopted Observational Method approach to investigate differences between visually impaired people (Group A) and not visually impaired people (Group B) in voice navigation. The objective here is to find similarities and differences between voice navigation set by the two groups and to develop two voice navigation versions for each group. In this study, indoor spatial voice navigation tasks were performed by four people with visual impairment (Group A) and four people without visual impairment (Group B), and the result showed a significant difference between these two groups in voice navigation. Group A often used signposts in the environment for orientation and descriptions of the indoor environment. Group B, on the other hand, treated themselves as the center for describing their navigation routes. According to the similarities between Groups A and B, this study developed two voice navigation versions, one for Group A and the other for Group B, and will continue investigating the accuracy, efficiency, and user satisfaction of these two versions of voice navigation for people with visual impairment.