West Asia and North Africa is an important region of the Belt and Road, and languageintercommunication is the guarantee and foundation of interconnection and intercommunication between Chinaand the region. This study measures the language distance index between China and 26 West Asian and NorthAfrican countries based on WALS database and investigates its impact on China's products export to them bythe related data for the period 2007-2016 and the extended gravity model. The results show that the languagedistance index decreasing by 1% could lead to the growth of China's products export by 1.1 72% and there isa great potential in export trade to West Asian and North African countries through measuring. Influenced bythe religious atmosphere in West Asia and North Africa, it is difficult to promote Chinese in the region, butmastering and using the target countries languages as one of the most effective ways to narrow the bilaterallanguage distance is of theoretical and practical significance for promoting China's export trade to West Asiaand North Africa.