1. Physical development indicators 1. Height and weight 2. Head circumference, chest circumference, and abdominal circumference 3. Teeth growth The height and weight of a ten-month-old baby develop rapidly, with an average height of about 71 cm and a weight of about 8.5 kg. The baby\’s head circumference, chest circumference and abdominal circumference are also increasing, which is a normal manifestation of growth and development. In addition, the ten-month-old baby\’s teeth also begin to gradually grow in, usually with two lower front teeth. 2. Motor development indicators 1. Crawling and rolling 2. Use of assistive devices for standing and walking 3. Hand coordination The motor ability of ten-month-old babies has been greatly improved.