This paper explored environmental education evaluations in Japan and Taiwan, highlighting both similarities and divergences in methodologies and psychological conceptualizations. This paper was structured into three key segments: 1) the similarities and differences of the orientation of guidelines for environmental education program evaluation between Japan and Taiwan; 2) the current development status of psychological concepts in environmental education between Japan and Taiwan; 3) the perspective and role of "Social Impact Evaluation" in the field of environmental education in Japan and Taiwan. During the analysis process, it can be found that Japan and Taiwan have the similar views and visions on environmental education. Taiwan's dual framework and Japan's focus were examined, alongside the necessity for a "social impact evaluation." The research found that it is necessary to adopt dynamic evaluation with different weights in response to different environmental education goals, so that the evaluation method can be more adaptive to time and local conditions.