Tea is a perennial industrial plant with long harvesting cycle (from 30 to 40 years). It brings high and stable economic efficiency on sloping upland of the Northern mountainous regions of Vietnam. To increase its competition amongst various world's tea productions, it is necessary to create a brand for tea products. Safe tea production, organic tea is a right direction at present. Therefore, the reduction of chemical fertilizer and increasing of organic fertilizer for tea plantations is indispensable. Addition of biological organic fertilizers replace part of chemical fertilizers, the yield increased from 2.7 - 16.6 percent. Quality of finished tea in the addition of biological organic fertilizer formula also biological differences compared to control no biological organic fertilizers.