The development indicators of one year and three months old babies generally include five aspects: height, weight, language, movement and social adaptability. 1. Height. Boys’ height is around 71.2cm-88.9cm. Girls’ height is around 70.2cm-87.4cm. 2. Weight. Boys weigh around 7.68kg-14.88kg and girls weigh around 7.34kg-14.02kg. 3. Language. Can say some simple single words and superimposed words, such as daddy, mommy, don’t, etc. 4. Movement. Able to stand, walk and squat on their own, and can scribble with a pen in their hand. 5. Social adaptability. Can play simple games, like to hide and seek, can distinguish their own body parts, recognize some common things, willing to play with children of the same age. If you find that your baby’s development indicators are different from those of children of the same age and gender, it is recommended that you go to the hospital in time for consultation.