Abstract: Based on the improved Cournot model and Stackelberg model, this paper analyzes the first-mover advantage of China Mobile which is in a dominant position; then, by using complete information dynamic game, this paper analyzes the market share of the oligopoly monopolized market of the mobile communications industry before the reorganization of the telecom industry and tests the analysis conclusion; at the same time, this paper analyzes the market share at the time of initial stage and maturity of the market after the reorganization. According to the analysis of this paper, China Mobile’s market share declines after the reorganization, which has a certain effect, but China Mobile is still in a leading position. Be it the duopoly before the reorganization or the three oligopoly after the reorganization, every mobile operator has a relatively fixed market share in a steady state. This shows that mobile operators of China should cooperate on the basis of competition when developing the domestic market, and explore the international market in order to achieve greater development.

Key words: mobilecommunications, marketshare, gameanalysis, reorganizationofthetelecomindustry