Differentiation refers to the morphological and functional differences between cells in an individual due to the division of biological behavior, which was recently obtained on the basis of division. This difference is reflected in the development of different types of cells into different tissues and organs to complete different biological behavior functions.

Cell differentiation is greatly influenced by internal and external factors, such as cell polarity, hormones and some chemical components in the body, as well as the corresponding spatial position in the environment, light, temperature, pressure, humidity, etc., which may affect cell differentiation in organisms to some extent. The formation of cell differentiation is related to the coordination and balance of environmental factors.