\noindent Using results drawn from the pages of PRL\cite{Zhu2014}, the authors comment on \textquotedblleft Semiconducting Layered Blue Phosphorus: A Computational Study\textquotedblright. In recent letter\cite{Zhu2014} unknown phase of phosphorus with high stability and a wide fundamental gap was proposed by Zhu, and Tom\'anek. The first half of the comment questioned elements of phosphorus blue structure, while the second half devoted to van der Waals forces between AB stacked blue phosphorus layers which missed by them.
