Objective:To prepare colloidal gold dipstick for rapid detection of Streptococcus suis serotype 2. Methods:Colloidal gold was prepared by citrate-natrium deoxidize method and coupled with the antibody against Streptococcus suis serotype 2, and Streptococcus suis serotype 2 was detected by immunochromatography assay in this study. Besides its sensitivity, specificity and stability were studied. Results:Gold immunochromatography assay was developed for detection of Streptococcus suis serotype 2, the best comp...