The main purpose of this research is to study the causes of Kashan underdevelopment tourism industry. The method of this research in terms of purpose is practical (applied) and data gathering is descriptive and solidarity type. The populations of this study include 260, all tourism managers and artisans working in Kashan tourism industry. Samples are selected by the use of Morgan Table and include 70 people. Sampling method is cluster sampling. The researcher’s made questionnaire was used for data collection. Facial and content -related validity was obtained by using the available sources and knowledgeable people’s opinions and their validity through tentative execution and calculation of Cronbach’s Alpha Coefficient 88%. Findings indicated that information and advertising, development of transportation, coordination of the related tourism organization as well as providing tourists with welfare conveniences such as hotels, restaurants and exhibitions are the main important factors in the growth of tourism in this province. Keywords: development, underdevelopment, tourism, Kashan. Findings indicated that information and advertising, development of transportation, coordination of the related tourism organization as well as providing tourists with welfare conveniences such as hotels, restaurants and exhibitions are the main important factors in the growth of tourism in this province.