The longitudianl study on taurine intake of breast-fed infants from Korean lacto-ovo-vegetarian (n=23) and non-vegetarian(n=22) at 3-5, 15, 30, 60, 90, 120, 150 days postpartum was performed. The taurine content of human milk was analyzed by amino acid autoanalyzer (LKB-Alpha plus) and the human milk intak of infants was measured by test weighing method. The mean taurine content of human milk at each postpartum period was 434$pm$128.362$pm$, 304$pm$90, 306$pm$90, 302$pm$77, 310$pm$108, 248$pm$53 nmol per ml in non-vegetarian and 418$pm$112, 380$pm$97, 314$pm$97, 262$pm$83, 206$pm$79, 176$pm$55, 153$pm$31 nmol per ml in lacto-ovo-vegetarian, respectively. The content decreased significantly during lactation(p<0.05). The mean tauring intake at 15, 30, 60, 90, 120, 150 days postpartum was 195$pm$94, 202$pm$74, 212$pm$54, 177$pm$43, 137$pm$47, 132$pm$35, 106$pm$15 umol per day in infants of lacto-ovo-vegetarian. Thu taurine content in human milk and the taurine intake of infants were different during lactation between non-vegetarian and lacto-ovo-vegetarian, and the intake per kg body weight during lactaion decreased.