Mangroves are various kinds of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics.Remote Sensing plays a major role in Mangroves change study nowadays. Main objective of this study is Change Detection; idea behind it is to extract change information through two imageries. Mangrove change detection study gives information about each & every aspect of Environment & Remote sensing. Through which we can conclude about particular mangrove ecosystem, its rehabilitation, restoration & status about potential areas with its biotic interferences. Ecological & Economic Values of Mangroves can be carried out by this type of study. There are some major factors which are controlling mangroves development. Likewise, Climate, Salinity, Tidal fluctuations, soil & wind velocity & other biological factors.