The present invention discloses an anti-SARS specific IgY, its preparation method and its preparation. Said preparation method includes the following steps: screening out main pathogenic virus resulted in SARS disease, on the basis of screening and differential combinations respectively preparing single or complex pathogenic virus antigens, preparing immunoprotein and preparing anti-SARS various pathogenic virus specific IgY crude extracts and purifying the above-mentioned crude extracts which can be made into several preparations for preventing and curing SARS.