Metastatic Crohn's disease, in which non-caseating granulomatous infiltration of the skin occurs at sites separated from the gastro-intestinal tract by normal tissue, is the least common dermatologic manifestation of Crohn's disease. We report a 15-year-old girl with metastatic Crohn's disease presenting as granulomatous vulvar papules and nodules with typical histopathologic features. To the best of our knowledge, this is the first case of metastatic Crohn's disease in Chinese children reported in the English medical literature.