Abstract: In ancient China, "star", "asterism" and "constellation" were different when used to denote celestial objects. As a special word, "star" indicates 28 star areas in the zodiacal belt. In terms of its original usage, it was just used for observing and calculating lunar movement. Later, it was applied to observe and calculate other celestial objects. However, it was used only as the coordinates to measure other celestial objects, without considering its significance as fixed star or constellation. "Asterism" was named for the officer in the sky, for example, a variety of officers in the government. However, an object name without the meaning of the officer cannot represent an asterism. For example, vehicles or other matters cannot be used to name an asterism. Names for constellations were adopted in a more popular manner:officers, animals as well as other matters can be used as the names of constellations. Those 28 star areas in the zodiacal belt can also be called 28 constellations.