The coastal area of Bay of Bengal(BoB) and Arabian Sea(ARS) is a one of the mostly populated area in the world(more than 2.31 billion). The huge costal line of more than 11,146 km are very much affected by the tropical cyclone occurred in this regions of BoB and ARS in several times in a year.

In this paper we have studied the category of depression (wind speed  above 25kt./hr.)in 2018 in Indian Ocean area. There are 14number of such event has been occurred during the year 2018 in BoB and ARS . From those depression,Seven of them become Cyclonic Storm (CS) with the wind speed above 40kt./hr. The attempt has been made to categorize the Tropical cyclones(TC) of  ‘Mekunu’, ‘Luban’ and ‘Sagar’ occurred in ARS and ‘Daye’,’Titli’, ‘Gaja’ and ‘Phethai’ occurred in BoB.From these seven storm ‘Mekunu’, ‘Titli’, ‘Gaja’, ‘Phethai’ become very severe cyclonic storm(VSCS).

Here we have also studied the characteristics of all depressions including the devastating power of them. We also find some linkage of solar influence with those hazards. Also it has been done that the estimated damage and property losses in socio economic aspect during these events.