Abstract: The studies conducted in the field of foreign trade in recent decades gradually have been distanced far away from firm’s homogeneity assumption and more have dealt within tentioned heterogeneity among manufacturing enterprises. Most of these studies are based on the fact that within a certain industry only some parts of firms have entered into the export markets and the rest only been limited to sell their products in the domestic market. The theoretical studies justify this phenomenon in a way that entry into export markets requires some capacities in firms. Recognizing these factors can help to improve export performance. So, in the this study using Tobit and Heckman Censored Regression Model and information of manufacturing firms in Iran, the role of investment in information and communication technology in behavior of Iran’s export enterprises have been investigated. The obtained results of the current study showed that investment information and communications technology has significant and positive impact on both export propensity and intensity.