Revenue is a directed goal of many enterprises or pointed economy corporations in each countries, it decides the existence and development of those countries. To achieve this goal, one of the common solutions is used to analyze and forecast revenue that bases on human and equipment resources of each economic organizations to ensure minimized expenditure and maximized profit. This article proposes a solution to apply a analysis and forecast method "multiple regression" in forecasting revenue of telecommunications services at Thai Nguyen telecommunication branch that bases on three main norms: Population, Subscribers, the average income of each citizen in order to support for managers who can give exact decisions, to ensure maximum revenue.