Three flips, six sits, eight crawls, mothers have heard such slogans as soon as their babies are born, emphasizing the importance of gross motor development. In addition to sitting, crawling and standing, fine motor movements of the hands are also very important, but are often overlooked by parents. What is fine motor? Fine motor, in general, refers to finger movements, and hand-eye coordination. Fine motor development is closely related to a child’s intellectual development, which is what the old Chinese saying “dexterity” means. The age progression of hand fine motor development is as follows: 1 month: both hands make a fist and hold it more tightly after stimulation. 2 months: Both hands are still in a fist, but the tension is gradually reduced. 3 months: The hands can open frequently and can hold the flower prong stick for a few seconds when it is placed in their hands. 4 months: When lying on the back and awake, the two hands can come together and play with the fingers in front of the eyes, which is called “gaze at the hand movement”, and this movement disappears after 6 months. 5 months: Can grasp objects within a hand’s distance, holding objects with the entire palm of the hand to grasp. 6 months: Can hold a bottle and play with their feet. When a dark-colored handkerchief is used to cover the child’s face, he will use his fingers to grasp it off, and when one upper limb is pressed, he will use the other finger to throw the handkerchief off, which is called the “face masking test”. If one side cannot pull off the handkerchief when pressing both upper limbs separately, it reveals the possibility of hemiplegia. 7 months: The baby can touch things with one hand, take cookies by himself, and switch from one hand to the other when playing with blocks. 8~9 months: The thumb can pinch with other fingers. 10 months: Can use index finger to touch objects, and can place objects on the table. 11 months: Can pinch and hold smaller objects with thumb and index finger. Can put something in the basket and take out another one. 12 months: Can give toys to others and can hold a pencil to scribble. 12~15 months: No longer puts blocks in mouth, can stack 2~3 blocks, likes to throw objects to the floor. 2 years old: can build 6~7 blocks into columns without collapsing, can turn door handles, rotate round plates, and turn books page by page. 3 years old: can build 9~10 blocks into columns without collapsing, can dress and undress without difficulty, and can draw a circle and the word “ten”. There are individual differences in hand function development, individual children can grip things at will at 3 months of age, while there are normal full-term children who cannot grip things at will at 6 months of age. Delayed hand development may be associated with mental retardation. Severe hypotonia or increased muscle tone can affect the development of hand movements. Parents are advised to regularly observe their baby’s hand fine movements and seek medical attention when abnormalities are detected.