Abstract: Due to the new development structure of world economy, the new normal for the development of Chinese economy and the new markets for the "one road and one belt" strategy, it is necessary for Chinese enterprises to further expand and cultivate overseas markets. However, overseas projects have to face all kinds of risks because of such uncertain factors as political and economic environments, policy barriers and protections, legal and cultural differences and different international project operation procedures. Based on information technology, this paper analyzes various risks for overseas projects of building companies and puts forward prevention measures and approaches.