Low carbon economy is the important development trend of China, which is also the important point and only way to construct Liaoning coastal economic zone as well as a booster to accelerate the development. Currently, Liaoning coastal economic zone has not only been formed in the construction of low carbon economy as the leading situation but also not yet complete a support policy system based on low carbon economy. Low carbon industrial cluster is the direction of the industrial cluster’s development in the time of low carbon economy, and is also an effective way to promote green competitiveness, thus to develop low carbon industrial cluster is the key to the construction of Liaoning coastal economic zone. In the existing literature, most scholars focus on policies and methods of Liaoning low carbon economy’s development but lack of a further systematic study on development route of low carbon economy of Liaoning coastal industrial cluster. This paper, based on in-depth analysis of the existing industrial structure of Liaoning coastal industrial cluster, analyses the problems of Liaoning coastal industrial cluster developing low carbon economy, and then according to the needs of the development of low carbon economy proposes the route choice of how to promote the low carbon development of Liaoning coastal industrial cluster.