Marine medical shelter laboratories can support the safety analysis of biological, chemical or environmental samples, enhance emergency response capabilities while at sea, ensure reliable experimental and analytical space in harsh environments, and timely and efficient testing and data collection to support scientific research, resource assessment and disaster response. Considering the space, flexibility, mobility and Marine conditions without affecting the original operating capacity of the ship in service, the container modular Marine medical shelter is installed as a special cabin and carried out at sea with the ship. In order to avoid the cabin body damage caused by excessive weight of the built-in equipment and instruments or under the impact of high-level wind and waves, the finite element safety simulation and analysis software is adopted. The structure of the Marine medical shelter is simulated, and its structural strength and impact resistance are calculated by finite element method. The deformation and stress of the structure under shelving and offshore working conditions are calculated, and the strength verification of the designed structure is completed, so as to ensure the operational safety and stability of the Marine medical shelter.