PROBLEM TO BE SOLVED: To provide a lymph lumen formation promoter, a lymphatic vessel endothelial cell proliferation promoter, or a composition usable for improvement of swelling or wrinkles.SOLUTION: This invention relates to the lymph lumen formation promoter, the lymphatic vessel endothelial cell proliferation promoter, or a swelling ameliorating agent, a wrinkle ameliorating agent or an external preparation composition, which contain as an active ingredient, a pericarp, a fruit or an extract of a fruit (including a seed) of Passiflora edulis Sims. which is a plant of genus Passiflora of Passifloraceae family.