Basic objective of this article is to Discuss on How Mountains Form. Generally, it takes hundreds of thousands years for mountain belts to, stabilize, and erode to get part of a firm craton. This evolution is usually marked by three development: accumulation, orogeny, and uplift/block‐faulting. Here also discuss on Accumulation, Mountain‐building convergence, Ocean‐continent convergence, Arc‐continent convergence and Postconvergence mountain‐building.