Bats are the second most species of mammals after rodents. In this paper we reported diversity and roosting site of bats in the Girwa tehsil of Udaipur district, Rajasthan recorded from November 2007 to February 2009. Various surveys were performed in the tehsil to identify roosting sites of bats. After identification of the site, bat species were identified and numbers were counted each month. A total of six Micro chiropteran bat species belonging to five families were recorded in Girwa tehsil during the study period. The highest number of individuals of Rhinopoma microphyllum was recorded in Girwa tehsil. Variety of habitats and availability of surface water in good quantity throughout year may be a key factor for such good number of bat species in this tehsil.