Crowding is one of the most common malocclusion in the orthodontics. In the dental patients, the most common element of malocclusion are crowding and irregularity. Crowding refers to the discrepancy between the jaw size and tooth size leads to derangement of tooth row. If there is more tooth material or reduced arch length then it leads to crowding of teeth. One of the most common reason that the parents bring their child to the orthodontist is “CROWDING”. During transition from mixed to permanent dentition it is well known fact that the length of the arch is lost. This article aims to provide in short review of many treatment options for management of crowding in mixed dentition.