Boko Haram terrorist group has posed a significant security problem to the country. Apart from the fact that the terrorist group has displaced farmers, causing many of them to desert their farms, their activities have equally affected the country's production and trade of goods and services. Boko Haram insurgency has similarly affected the movement of goods and services across the country, especially in the North-eastern states, the exportation of cash and food crops, tourism, and entrepreneurial development, all of which have dire consequences for the country's economy. If Boko Haram's terror is allowed to persist, it could plunge the country into a recession that will take years to recover. Thus, this study examined the effect of the Boko Haram insurgency on Nigeria's economy, with a particular focus on how to curb the menace. The paper utilized secondary data sourced from textbooks, journals, newspapers, and the internet. The paper found that Boko Haram terrorist insurgency harm agricultural productivity, trade, investment, entrepreneurial and industrial development in Nigeria. It therefore recommended that Nigerian government should provide adequate necessities of life such as good hospitals, quality education, motorable roads, portable water, and favourable conditions for employment opportunities to the people of Nigeria, as it will help to enhance employment generation and reduce the rate at which people indulge in the act of terrorism. It also recommended that the government should initiate more strategies or programmes of poverty reduction, as it will help reduce drastically the rate at which some Nigerians indulge in acts of terrorism or other activities capable of enthroning insecurity in the country.