Traditional Chinese medicine decoction is a liquid composite dispersion system, which is the earliest and most widely used dosage form in China. At present, it is still widely used in TCM clinic.

Traditional Chinese medicine decoction has been used for thousands of years, because the formula is flexible and meets the needs of TCM syndrome differentiation and treatment; At the same time, the preparation method is simple, using water as solvent, which is cheap and easy to obtain, and takes effect quickly, but it also has the disadvantage of bitter taste and must be prepared temporarily.