Due to rapidly changing environment based on triple play, the conovation of competitiveness in telecommunication industry has also changed. The operators should adjust their strategic direction timely according to changes in competitive environment. So how to promote the competitiveness under triple play has become a hot issue in telecommunication industry. Based on ISM (Interpretative Structural Model) method, we established the competitiveness promotion model under triple play environment. In this model, the competitiveness structure is divided into explicit layer, driver factor layer and the basic layer; each layer contains several driver factors affecting the telecommunication competitiveness, including technical scalability, market innovation and so on. Through the empirical study on the status of telecommunication industry and the model validation, we proposed strategies to promote the competitiveness for the development of telecommunication industry.