Utility tunnel is a new design idea for laying underground pipelines in cities in the past 10 years. However，its application in port engineering is relatively rare. The port project has a unique layout. The pipeline types，foundation conditions，loads，ground facilities，and interactive nodes in the site are very different from those of urban utility tunnel. The structural design conditions are very complex. In view of the above problems，in the utility tunnel design of Guangzhou Port Nansha Phase 4 Project，combined with the characteristics of the automated container terminal，the load conditions，settlement requirements and so onare studied. Then the optimization design ideas of multi-functional cover section and the gradient composite foundation are proposed. Through the above optimization design ideas，the utility tunnel structure design suitable for automated container terminals has been completed，which effectively solves the problem of pipeline integration. The structural design experience described in this paper has certain reference significance for the structural design of the utility tunnel of subsequent automated container terminals.