The invention belongs to the field of medicines, and relates to a quality detection method for a traditional Chinese oral solution, in particular to a quality detection method for a ginseng, cassia twig and poria cocos oral solution. The quality detection method comprises the steps of identifying traditional Chinese raw materials and measuring the content of effective components, wherein, specifically, cassia twig, radix paeoniae alba, liquorice, dried ginger, polygala enuifolia and rhizome acori graminei are identified, and the content of the effective component of cinnamic acid in the cassia twig and the content of the effective component of paeoniflorin in the radix paeoniae alba are measured. The detection method has the advantages of being high in accuracy, good in repeatability and the like.