Abstract:The tea leaves of Fudingdabai tea tree from Guizhou Province were used as experimental materials，and different fresh leaves of autumn from four major tea-growing areas（Duyun City，Kaiyang County，Meitan County，Anshun City）were used to process ultra green tea powder under the processing conditions of indoor spreading，microwave fixation and hot-air drying.The quality of the made ultra green tea powders was assessed by sensory evaluation，chemical composition and color test，in order to investigate the quality characteristics and general level of ultra green tea powder in Guizhou Province.The results of ultra green tea powders from four major tea-growing areas showed that the contents of tea polyphenols and water extract were generally higher while the contents of caffeine were relatively stable.And the higher free amino acid contents provided their umami flavor.These tea powders formed two styles，one was fresh，mellow and brisk，another was heavy，mellow and sweet after taste，and both of them were of decent quality.