The present invention relates to a method for screening an antibody against an immuno-immune antigen and a sensor for detecting an immuno-immune antigen. According to an embodiment of the present invention, a method for screening an antibody against an immuno-immune antigen comprises mixing a first pathogen comprising serum and a first immuno-immune antigen to form a first antibody-antigen reactant; Obtaining a first antibody comprising a target antibody against the first egg-immune antigen by acid-treating the first antibody-antigen reactant; Forming a second antibody-antigen reactant by mixing a second pathogen that does not contain the first egg-immune antigen compared to the first pathogen; And obtaining the target antibody that has not reacted with the second pathogen from the second antibody-antigen reactant.
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