To evaluate the quality of Scutellaria baicalensis Georgi by determining the content of different bathes and its colorimetry compounds.Methods:Ultra performance liquid chromatography(UPLC)was used to determine the contents of Scutellaria baicalensis Georgi and the chromaticity of Scutellaria baicalensis Georgi was determined by colorimetry.Results:The content of baicalin in Scutellaria baicalensis Georgi from different areas and grades were different,and the chromaticity of Scutellaria baicalensis Georgi powder was obviously related to its grades.Conclusion:The method of UPLC and Colorimetry can provide reference for evaluating the quality of Scutellaria baicalensis Georgi.