中文摘要：

随着区域经济一体化进程的推进，城市之间的协同发展已被认为是实现区域经济可持续发展、谋求共赢的有效途径。淮海城市群是“丝绸之路经济带”东部开放的前沿阵地，区位特征明显，战略地位重要，但发展水平相对滞后。以徐连同城化发展作为拉动区域经济发展的增长极既是淮海城市群经济发展的需要，也是徐州、连云港两市自身发展的诉求。本文借鉴基于信号博弈的地方政府协作机制模型，分析城市协同发展的博弈过程，认为建立长效沟通渠道和利益共同体、提高协作收益并确保收益合理分配是促进徐连同城化发展的有效政策，也是破解淮海城市群发展缺乏强集聚力核心问题的政策选择。

英文摘要：

With the development of regional economic integration,synergetic development of the city has been considered to be the effective path of realizing the sustainable development of regional economy and seeking win-win.The economic development level of Huaihai urban agglomeration,located at the eastern forward of the New Silk Road economic belt,geographical characteristics significantly,strategic position important,is lagging behind.Taking Xuzhou-Lianyungang integration as the growth pole is extremely necessary for the development of Huaihai urban agglomeration and the cities themselves.Local government coordination mechanism model based on signaling game model is used to analyze the game in the process ofXuzhou-Lianyungang Integration development.Establishing long-term communication and the interests of the community,improving collaboration benefits and ensuring the benefits distributed reasonably are the effective policy options for the development of Xuzhou-Lianyungang integration and Huaihai urban agglomeration.