The growth pattern of the baby in each month is reflected in the general rate as well as the development of various organs and systems, but there are individual differences. 1. General pattern (1) From top to bottom: e.g. lifting the head first, then lifting the chest, then sitting, then standing and walking. (2) From near to far: e.g. moving from arms to hands, legs to feet. (3) From coarse to fine, e.g., grasping objects with the whole palm of the hand, then picking up objects with the fingers. (4) From low to high, e.g., seeing and hearing, then thinking and analyzing. (5) From simple to complex, e.g., can draw straight lines, then shapes. 2. overall speed: growth and development have stages, the first 3 months of growth rate is faster, in the 12th month to reach the first growth peak, and then gradually slow down, until puberty will reach the second growth peak. 3. Various systems and organs: The growth and development of various systems and organs of the human body are not balanced, such as the nervous system develops earlier and the reproductive system develops later. 4. Individual differences: The pattern of growth and development is affected by genetic and environmental factors within a certain range, so there are individual differences. Growth and development, regardless of the overall rate, or the development of various organs and systems, all follow a certain pattern, but at the same time must also take into account the different factors affecting individuals.