How many new minerals have been found at the Bayan Obo iron mine since the second half of last century? There has been no consensus made to the question: 15, 19, 4 or 16 species. The authors of this study, based on objective and fair stand, give nine species of minerals, although more than 14 new minerals have been discovered up to now. On the basis of commenting these new species, this study preliminarily summarized experience and lessons during the research of new minerals and presents some prospect for discovery of new minerals in the Bayan Obo iron mine.