The brain development in the first several years after birth is perhaps most dynamic. However, the studies on white matter maturation of infants and toddlers with relatively evenly distributed ages in 0-3 years are rare. Here, we charted white matter development in subjects 0-3 years-of-age through measurements of DTI-derived metrics at the tract level and tract-group level. A 3-stage maturational pattern was revealed for all white matter tracts. The differentiated maturation among the white matter tracts and tract groups was found using DTI measurements.