Taking the planning scheme of the Zhujiang operation area in the Yangzhong port area of Zhenjiang Port as an example，this paper discusses the ideas and methods for the implementation of green development in the overall port planning. At the beginning of planning，it puts forward suggestions to guide spatial layout from the perspective of green development，such as avoiding environmentally sensitive targets，coordinated development of the port and cities，and efficient and intensive utilization of resources. After the preliminary formulation of the planning scheme and given the background analysis of the main types of goods transported and environmental quality in the operation area，it proposes that the impact of dry bulk cargo transportation in the port area on the atmospheric environmental quality should be the focus during planning. Moreover，it formulates different development scenarios of throughput in the planning year and predicts and analyzes the atmospheric environmental impact. On the basis of the prediction results，it presents some suggestions on the scale control of dry bulk cargo throughput in the planning year. The research result can provide a reference for the implementation of green development in the spatial planning of ports.