This is an experimental study to investigate cognitive process in persons to the urban environment based on an ecological approach, while their wayfinding behaviors changes by repetition learning. The results are summarized as follows. 1) The cognitive process of the urban environment is composed of the following four stages. First stage: This stage is not done not only Visual-Organization (VO) but also Sign-Organization (SO), and shows various behavioral patterns that repeat the trial and error based on an individual characteristic. Second stage: This stage is not done SO while VO is roughly done, and shows the uniform behavioral pattern based on the functional distance. Third stage: This stage is roughly done VO and SO. However, this stage still shows the uniform behavioral pattern based on the functional distance as well as Second stage. Fourth stage: This stage is completely done not only VO but also SO, and shows the uniform behavioral pattern based on the cognitive distance. 2) In the cognitive process of the urban environment with an irregular streets network, “First stag / Third stage / Fourth stage” appears newly in addition to “First stag / Second stage / Fourth stage” in the urban environment with a grid network of streets. This reason is that the scheme toward the target point was diversified because the cognition of the urban environment with an irregular streets network is more difficult than the urban environment with a grid network of streets.