NOVELTY - A conductive silver paste is prepared from a slurry A and a slurry B through mixing and ball-grinding at equal proportion, where the slurry A is composed of 40-50 pts. wt. 30-60 nm silver, 10-15 pts. wt. 61-90 nm silver, 8-12 pts. wt. glass frit A, 15-20 pts. wt. organic carrier A, the glass frit A consists of 20-40 pts. wt. bismuth oxide, 10-20 pts. wt. silicon oxide, 5-10 pts. wt. barium oxide, 2-8 pts. wt. aluminum oxide, 2-5 pts. wt. titanium oxide, 1-5 pts. wt. tin oxide, 1-5 pts. wt. sodium oxide, and the glass frit B is made of 10-20 pts. wt. silicon oxide.    USE - Conductive silver paste for environment-friendly lead-free silicon solar cell front electrode.    ADVANTAGE - The silver paste increases packing density of a membrane layer and the contact area among the particles, and reduces contraction force of the membrane layer, so that the conduction capacity of the conductive silver paste is increased. The silver paste can be prepared in a cost-effective manner with better economic benefit.    DETAILED DESCRIPTION - A conductive silver paste is prepared from a slurry A and a slurry B through mixing and ball-grinding at equal proportion, where the slurry A is composed of 40-50 pts. wt. 30-60 nm silver, 10-15 pts. wt. 61-90 nm silver, 8-12 pts. wt. glass frit A, 15-20 pts. wt. organic carrier A, the glass frit A consists of 20-40 pts. wt. bismuth oxide, 10-20 pts. wt. silicon oxide, 5-10 pts. wt. barium oxide, 2-8 pts. wt. aluminum oxide, 2-5 pts. wt. titanium oxide, 1-5 pts. wt. tin oxide, 1-5 pts. wt. sodium oxide, the organic carrier A consists of 30-40 pts. wt. polyethylene glycol, 15-20 pts. wt. propylene glycol monobutyl ether, 10-20 pts. wt. ethylene glycol ether, 5-10 pts. wt. hydroxyalkyl cellulose, 2-5 pts. wt. silver trifluoroacetate, and 1-5 pts. wt. additives, and the slurry B is composed of 5-10 pts. wt. 1-5 mu m aluminum powder, 5-10 pts. wt. 61-90 nm aluminum powder, 3-6 pts. wt. glass frit B, and 5-10 pts. wt. organic carrier B, the glass frit B is made of 10-20 pts. wt. silicon oxide, 5-10 pts. wt. boron oxide, 5-8 pts. wt. barium oxide, 2-5 pts. wt. magnesium oxide, 2-5 pts. wt. silver oxide, 1-5 pts. wt. lithium oxide, and 1-3 pts. wt. cobalt oxide, and the organic carrier B is made of 10-20 pts. wt. butylcarbitol, 5-10 pts. wt. citric acid monobutyl triethanolamine, 2-5 pts. wt. epoxy, and 0-3 pts. wt. additives. An INDEPENDENT CLAIM is also included for a method for preparing conductive silver paste.