The utility model discloses a food level tea saponin liquid detergent isotropic symmetry for preparing contain oxidation type tea polyphenol, including casing, damping device and homogeneity impact device, the fixed damping device that is provided with of bottom four corners department of casing, the inside wall of casing is installed the homogeneity and is strikeed the device, the output that the homogeneity assaults the device is connected with the impact pipeline, the upper end of assaulting the pipeline is provided with the switch, the upper end of switch is connected with high pressure towards rifle, the front end of switch is connected with low pressure towards rifle, bottom one side of casing is connected with the input pipeline, top one side of casing is connected with output pipeline, the vertical (mixing) shaft that is provided with in middle part in the casing, the output shaft that the casing was connected with driving motor is passed on the top of (mixing) shaft, the welding has many stirring vane on the (mixing) shaft, the bottom welding of (mixing) shaft has the scraper blade, the utility model has the advantages of simple structure and reasonable design, can effectively improve the homogenization effect of liquid detergent, make things convenient for moreover and adjust, the vibrations that produce in the working process are also less.