The frequent mobility of construction workers has affected the upgrading and sustainability of the construction industry. In order to exhaustively analyze how the workers'mobility influences this industry, we combine the game theory with the social network theory, which jointly forms a double parallel linked network, and then build a multi-agent model to conduct a computer simulation. How a worker decides to move in labor market and how he/she networks others in one organization are represented in this model. From the perspective of the game network and social network, simulation is conducted for such a multi-agent model that uncovers the decision-making process of worker's mobility and its effects on industrial skill, labor cost, employment relationship and interpersonal relationship among coworkers. The results show that workers' frequent mobility does harm industrial skill development, which can increase labor cost, deteriorate employment relationship and interpersonal relationship among coworkers. Developing an effective training program, implementing technology-oriented incentives for employer and improving market-oriented security system may relieve worker's willingness to move frequently and reduce its negative effects on industrial aspects.