Traffic congestion is widely distributed around a network. Generally, to analyze traffic congestion, static traffic capacity is adopted. But dynamic characteristics must be studied because congestion is a dynamic process. A Dynamic Traffic Assignment modeling fundamental combined with an urban congestion analysis method is studied in this paper. Three methods are based on congestion analysis, and the stochastic user optimal DTA models are especially considered. Correspondingly, a dynamic system optimal model is suggested for responding congestion countermeasures and an ideal user optimal model for predicted congestion countermeasure respectively. Generally, to analyze traffic congestion, static traffic capacity is adopted. However, dynamic traffic must be considered because congestion is a dynamic process. A dynamic traffic assignment modeling fundamental combined with an urban congestion analysis method is studied in this paper. Three methods are based on congestion analysis, and the stochastic user optimal DTA models are particularly considered. Correspondingly, a dynamic system optimal model is suggested for responding to congestion countermeasures and an ideal user optimal model for predictive congestion counter respectively.