The invention discloses titanate-based lead-free silver electrode slurry, a preparation method and a use method thereof, and belongs to the technical field of preparation of microelectronic components. The silver paste comprises the following components in percentage by weight: 70-85% of high-activity silver powder, 1-5% of glass powder, 10-25% of an organic carrier, 1-5% of an inorganic additiveand 1-5% of a paste modifier. According to the silver paste developed by the invention, the V-B-Si-Zn-Bi-Ti glass frit is used for realizing the lead-free effect of the paste, the lead content of thepaste is less than 100ppm, and the contents of other harmful substances such as Hg, Cd, Cr and the like meet the requirements of RoHS environmental protection indexes; and with the application of thesilver paste in the electrode of the titanate-based 5G microwave ceramic filter, the silver paste with different viscosities can meet the requirements of printing, dip-coating or spraying processes, the adhesive force after sintering is greater than 10N/mm<2>, the solderability is good, the conductivity is excellent, the insertion loss of the filter can be reduced, and the filter has a relativelyhigh quality factor.