The invention provides a colloidal gold chromatography band and the preparing technology to detect the special IgM,IgG. The colloidal gold is as the labeled thing of the colloidal gold. One end of the PVC back plate is pasted with the sample pad, the compound pad, the nitryl fibrous membrane, the other end is pasted with the absorbing pad; the compound pad is the glass fibrous membrane covered with the antigen-colloidal gold compound. The character is in that: the fibrous membrane includes three cover lines which cover the anti IgM antibody, the special antigen and the antibody according to the antigen separately. The invention detects the IgM antibody using the immune capture method principle and detects the IgG antibody by the double antigen sandwich method. So it can detect the special IgM, IgG antibody by one operation and the result has the high whole according ratio.