The growth curve shows the growth pattern of a normal child and indicates the normal range of variation. Between the 3rd and 97th percentile is the normal range. How to use it: Find the corresponding spot on the measurement month and draw a dot where it falls within the 25th-75th percentile as medium. Multiple measurements of the points are connected into a line to see if the growth pattern of your own child and the relationship of the standard curve, if it is parallel, it means good growth. If it deviates upward, it means that it is catching up with growth, how it deviates downward, it means that growth is slow and the cause should be found, whether it is caused by insufficient feeding or disease. Within the first year, the child starts to grow fastest in the first three months and gradually slows down. You can also not worry about why the growth is slow after half a year. It is especially important to observe the growth curve for premature or low birth weight babies. Catch-up growth is most important in the first six months after birth. It accounts for about 80% of the catch-up growth. Therefore, preterm and low birth weight infants should pay special attention to early infant feeding.