This paper analyzes the Overall Environmental Analysis Model for public off
street parking lots respectively, which integrates with of PEST, SWOT, five force analysis, BMC and other models related business operation, for an enterprise planning case and Taichung as cases. This study draws on the conclusions and suggestions from the perspective of civil industry participation in public construction, and provides the reference basis for the future affairs of the government authorities and related industries to carry out follow-up business strategy.