NOVELTY - A lead paste preparing method involves preparing mixed slurry by preparing mixed solution comprising water and ethanol, followed by stirring carbon powder, barium sulfate, organic additive, bonding agent and lead powder in the mixed solution for 10-15 minutes to obtain the mixed slurry. The mixed slurry is spray-dried to obtain spray-dried product, followed by dispersing fiber in deionized water to obtain a dispersed fiber, adding deionized water to the dispersed fiber to obtain mixed product of dispersed fiber and deionized water. The mixed product is stirred with a spray-dried product.    USE - Method for preparing lead paste for preparing a lead acid storage battery negative plate (claimed).    ADVANTAGE - The method enables preparing lead paste to provide negative plate with improved uniformity, enlarged contact area of carbon powder and lead powder, improved conductivity, and improved charge acceptance capacity, increased rate of utilization of active substances and battery with improved durability.    DETAILED DESCRIPTION - A lead paste preparing method involves preparing mixed slurry by preparing mixed solution comprising water and ethanol at a volume ratio of 5-20:1, followed by stirring carbon powder, barium sulfate, organic additive, 0-1 wt.% bonding agent and 0.25-10 wt.% lead powder in the mixed solution for 10-15 minutes to obtain the mixed slurry with solid content of 15-40%. The mixed slurry is spray-dried at spray air inlet temperature of 180-250 degrees C to obtain a spray-dried product, followed by dispersing 0.05-0.2 wt.% fiber in deionized water to obtain a dispersed fiber, adding 90-110 g deionized water per l kg lead oxide to the dispersed fiber to obtain mixed product of dispersed fiber and deionized water. The mixed product is stirred with spray-dried product for 10-15 minutes to obtain a mixture, followed by adding sulfuric acid with specific gravity (d15 degrees C) of 1.350 plus minus 0.004 g/cm3 to the mixture for 5-7 minutes and adding water to the mixture to adjust lead paste apparent density to 4.0 plus minus 0.25 g/cm3, where the organic additive is sodium lignin sulfonate, humic acid, wood powder and/or semi-carbonized wood, the bonding agent is PTFE, and the fiber is polyester fiber or acrylic fiber. An INDEPENDENT CLAIM is also included for a method for preparing lead acid storage battery negative plate, which involves coating the prepared lead paste on negative plate grid, followed by carrying out curing and drying process on the coated grid to obtain a finished product.