Objective To optimize the supercritical CO2 extraction procedure of Dianhong Tea， and analyze the components of extracts. Methods The effect factors including entrained， the feel particle， extraction time， extraction pressure and the extraction temperature were investigated by single factor method， then through the orthogonal tests optimize processing conditions. the extract were identified by GC-MS. Results The optimum extraction parameters were established with the entrainer of 250 mL ethanol， the feel particle of 20 meshes， the extraction time of 0.5 h， the extraction pressure of 25 MPa， the extraction temperature of 45℃， the yield was up to 0.46%， and 50 kinds of components were identified. Conclusion Supercritical fluids extraction can be used to extract the effective components of Dianhong Tea.