The invention discloses a method for preparing silicon-based solar front silver paste. The paste consists of 0.5 to 5 percent of glass powder, 40 to 85 percent of laminar silver powder, 5 to 45 percent of nano silver powder, 5 to 10 percent of organic carrier, 2 to 6 percent of solvent and 0.2 to 2 percent of auxiliary agent. The method mainly comprises the following steps of: (1) preparing the glass powder, (2) preparing the organic carrier, and (3) preparing the paste. According to the main design scheme of the invention, the printing height of a grid line and the conversion efficiency of acontact resistor and a battery can be changed by changing the adding proportion of the glass powder, the laminar silver powder and the nano silver powder; the viscosity and the printability of a product can be adjusted by changing the adding proportion of the organic carrier and the solvent; and the plasticity, leveling property and printability of the product can be adjusted by changing the adding proportion of a plasticizer. The paste of the invention has excellent printability, the sintered paste and a silicon chip form good alloy, a grid line electrode has great height, the series resistance is low, and the battery has high conversion efficiency.