Abstract: Design and application of a shipborne vertical plant factory was introduced．It completely used artificial light source enclosed method for vegetable cultivation and planting, ensuring that vegetable growth was not restricted by external natural conditions and achieving continuous annual vegetable production．The plant factory was a vertical planting system suitable for sea environment conditions, which solved problem of environmental adaptability of horizontal laminar flow planting．Comprehensive treatment of nutrient solution through schemes such as ultraviolet and ozone has improved recycling rate of nutrient solution, reduced consumption of freshwater resources, and reduced guarantee demand of equipment under marine environmental conditions．Application of plant factory could solve supply problem of fresh vegetables during voyage of the ship, and at the same time, it also could play a healing function for psychology of long-term floating personnel at sea．