After advent of lymphangiographic technique, the causes of chyluria can be evaluated by lymphangiography. The most common etiology known until today is parasitic origin, expecially filariasis. In Korea, established organism of filariasis is Brugia malayi. And othe nonparasitic etiologies such as retroperitoneal malignancy, chronic inflammatory disease, trauma, pregnancy, aneurysm are very rate. The authors experienced two cases of lymphatico-calyceal fistulas causing chyluria demonstrated by lymphangiography. The etiology of these two cases were unknoun exactly, but the clinical diagnosis were filarisis. These cases are reported with emphasis on the lymphangiographic findings of chyluria.