It is indicated according to the analysis of four cases that a great optic ring accompanied by glory is not always a primary rainbow.The great ring emerging with glory caused by ice cloud and fog is in fact an anti-solar(moon)halo,which is leading to a conclusion that the dominant Van de Hulst’s backward scattering theory on the formation of glory in recent years can not be used to illustrate all phenomenon concerning glory and gives a denial to the formulation that ice cloud and fog cannot produce any glories.It is also pointed out that there is an error in the explanations of Bouguer’s halo in the International Meteorological Vocabulary.