The whole concept and existence of smart cities is relatively very new. The theory of smart cities dates back to the late 20th century and has its roots in Los Angeles United States of America. Development of a city as a smart city does not mean to change the whole face of the city by changing its infrastructural facilities and by revamping its connectivity or by establishing a new city, the concept of smart cities may differ from one city to another and this does not consider to establish the revamping change in the infrastructure but it seeks to provide some of the facilities that will make the cities much more likable, convenient & clean. The needs of a tourist at a destination are cleanliness, safety, security, Proper water supply, better connectivity, peace, and transportation. While keeping in mind that if the facilities that are used at destination are the ones that promote sustainable tourism, they promote sustainable development of the whole area as well. The study tries to find out how a smart city mission makes a conducive environment for sustainable tourism in Udaipur City. The research design is descriptive whereas data has been collected from secondary sources like information on government, other related sites, and various research articles published in this regard. The results show the positive approach of Udaipur Smart City Limited while the study leaves the further scope for more research in regard to the evaluation of actualization of the measures that have been applied in the city and their effect on sustainable Tourism in the city.