NOVELTY - A high-dispersivity silver powder is prepared by adding a silver powder in solvent A, and adding atom transfer radical polymerization (ATRP) initiator, placing the reactant at less than 20-50 degrees C, ultrasound reacting for 3-4 hours, centrifuging, and washing sediment with solvent B; and adding solvent C, hydrophobic monomer, and catalyst in the silver powder, filling gas to exhaust oxygen, adding aglycone, placing the reactants at 60-120 degrees C, ultrasound reacting for 4-48 hours, taking out the sediment after centrifuging, and washing the sediment with solvent D, and vacuum drying at 25-60 degrees C.    USE - A high-dispersivity silver powder used for preparing a solar cell electrode conductive silver paste (claimed).    ADVANTAGE - The conductive silver paste improves conductive efficiency when reducing the dosage of the silver powder. It is clean, and environment-friendly.    DETAILED DESCRIPTION - A high-dispersivity silver powder is prepared by:    (A) adding a silver powder in solvent A, adding atom transfer radical polymerization (ATRP) initiator, controlling quality concentration of the ATRP initiator in the reactant to 0.5-1.3%, where the molar ratio of the silver powder to the ATRP initiator is 1:(0.4-0.8), placing the reactant at less than 20-50 degrees C, ultrasound reacting for 3-4 hours, taking out sediment after centrifuging, and washing the sediment with solvent B to obtain the silver powder with surface grated with ARTP initiator; and    (B) adding solvent C, hydrophobic monomer, and catalyst in the silver powder, filling gas to exhaust oxygen, adding aglycone, where the molar ratio of the hydrophobic monomer to catalyst to aglycone to silver powder is (5-100):(0.1-2):(0.1-3): 1, placing the reactants at 60-120 degrees C, ultrasound reacting for 4-48 hours, taking out the sediment after centrifuging, and washing the sediment with solvent D, and vacuum drying the sediment at 25-60 degrees C.    An INDEPENDENT CLAIM is included for preparing a solar cell electrode conductive silver paste, comprising:    (A) uniformly mixing (wt. %) bismuth oxide (Bi2O3) (46.7-53), zinc oxide (ZnO) (6.8-8.7), boron oxide (B2O3) (6.7-7.3), aluminum oxide (Al2O3) (6.5-8.3), silicon oxide (SiO2) (11-14.7), calcium oxide (CaO) (7-8), and titanium dioxide (TiO2) (6-7.3); heating to 1200 degrees C; keeping temperature for 2 hours, and pouring the oxides in cold water to quench; and ball-milling the quenched material for 5 hours, and drying to obtain a glass adhesive; and    (B) mixing high-dispersivity silver powder (53-61), glass adhesive (21.5-31), and organic carrier (15-17.6) to obtain a silvery white color, and discharging.