Method for identifying active ingredients of herba houttuyniae in granules for treating cough and asthma due to lung heat in children

The invention discloses a method for identifying active ingredients of herba houttuyniae in granules for treating cough and asthma due to lung heat in children. The method comprises the steps of preparing a reference medicinal material solution; preparing a test solution; preparing a blank solvent; respectively dripping the reference medicinal material solution, the test solution and the blank solvent with the same dripping amount on the same silica gel GF254 thin-layer plate, and drying the thin-layer plate after the thin-layer plate is developed by a developing solvent; after a color developing agent dinitrophenylhydrazine is sprayed on the aired thin-layer plate, drying the thin-layer plate until spots develop color; showing spots with the same color at the corresponding positions of the chromatogram of the test substance on the thin-layer plate and the chromatogram of the reference medicinal material. According to the method for identifying the effective component of the herba houttuyniae in the granules