The characters literally combine to mean “according to the steps, follow the sequence.” This paints a vivid picture of someone methodically moving from one stage to the next without deviation.
`按部就班` is deeply rooted in a cultural appreciation for order, structure, and predictability, values historically emphasized in Confucian thought. Following established procedures was seen as a way to ensure stability, quality, and harmony within a family, organization, or society. It represents the wisdom of “the proven path.” A useful Western parallel is the phrase “doing things by the book.” Both phrases carry a dual connotation. On one hand, doing something “by the book” or `按部就班` means you are being correct, thorough, and compliant, which is highly valued in fields like accounting, engineering, and law. On the other hand, it can imply a lack of flexibility, creativity, or common sense—a blind adherence to rules even when the situation calls for a different approach. This idiom perfectly captures a modern cultural tension in China. While the traditional mindset values the stability of `按部就班`, the fast-paced, innovative economy often demands the opposite: the ability to be flexible (`灵活 - línghuó`) and to adapt to changing circumstances (`随机应变 - suí jī yìng biàn`).
`按部就班` is a formal idiom (Chengyu) but is widely understood and used in everyday adult conversations, business, and writing. Its connotation depends entirely on the context.