PROBLEM TO BE SOLVED: To analyze, in a chemiluminescent manner, the concentration of water-soluble selenium in a water-soluble selenium-containing solution such as a desulfurization drain without being hindered by water-soluble arsenic or even an organic material.SOLUTION: A chemiluminescence analysis method comprises: an oxidation/strong oxidation step of heating, in the presence of a permanganate and a sulfuric acid, a water-soluble selenium-containing solution in which water-soluble arsenic and an organic material are mixed or may be mixed, or a water-soluble selenium-containing solution in which water-soluble arsenic is mixed or may be mixed; a first hydrogenation step of bringing the water-soluble selenium-containing solution after the oxidation/strong oxidation step into contact with a sodium borohydride; a reduction step of heating the water-soluble selenium-containing solution after the first hydrogenation step in the presence of a hydrochloric acid; a second hydrogenation step of bringing the water-s
