It seems that the review papers are recently more facilitated by many of journals and many of researchers started to work on the review projects or pay more attention to participate in the projects, instead to the original ones. This is because of easily available data for the review researches compared to the original researches or lab researches, without risks of the original researches and very cost-less. More over the more citation number of review papers compared to the original researches purged the journals and researchers to move toward the review researches for a reason of increasing H index or similar indexes. Now, the question is that, what are the opportunities and challenges of the increased number of the review researches? May it lead to pale of the original researches? Are there any rules for controlling the potential threats?