The work aims to utilize the historical context depicted in the poem Mulan and combine it with the current trend of traditional costume restoration, to materialize the image of Mulan in poetry and story based on the extensive history of Chinese traditional costumes. The method employed in this paper involves reviewing literary research, image materials, and object analysis to study the image of Mulan during the Northern Wei period. Starting from the dual identity of an ordinary woman and a military fighter in the poem Mulan, this paper investigates the female image of Mulan wearing a ruqun (a type of Chinese women's attire) and the male image of Mulan wearing a liangdang (a waist coat in ancient China) and a kuxi (a military uniform in ancient China). Both sets of clothing are then restored through practical applications using the triple evidence method of object, image, and literary evidence. Representative patterns, materials, colors, and styles from the Northern Wei period are selected and re-created through the processes of dyeing experiments, pattern copying, and embroidery practice, thus representing the image of Mulan with male and female attire. It aims to show the costume characteristics in the Northern Wei period with Mulan as the character background, and provide reference materials for image re-creation of Mulan.