The standard height of an 11-month-old female baby is 74cm and weight is 9kg, and the standard height of an 11-month-old male baby is 75cm and weight is 9.5kg. The usual standard height and weight of an 11-month-old baby is related to the baby’s birth condition and the parents’ feeding. Normal babies are fed reasonably by their parents after birth, and complementary foods are added reasonably, so that they do not eat in a partial manner and are not picky about their food. If the height and weight are significantly lower than the standard value, you need to go to the hospital for a trace element or vitamin D examination to clarify whether the height and weight are slightly lower due to nutrient deficiency, and give reasonable supplementation if necessary.