A chylous ascites, especially drug-induced, is very rare complication in CAPD. The diagnostic criteria for the drug-induced chylous peritoneal dialysate include 1) turbid dialysate developed within Chrs after the administration of causative drug, 2) no clinical symptoms being suggestive of peritoneal inflammation, 3) the fluid containing normal leukocyte counts and being negative for bacterial and fungal culture, and 4) it disappeared spontaneously after the withdrawal of the assumed causative agent and never recurred thereafter. We report a case of chylous ascites emerging after use of manidipine, dihydropyridine calcium channel blocker, in a patient undergoing CAPD. The chylous ascites in that patient was improved after discontinuation of manidipine.