The Federal Government of Nigeria took a very critical decision to close its land borders, what was after sessions of discussions on matters bordering on the economy and national security. The general objective of the study is to assess the Nigeria-Niger border closure and food security in Jigawa State-Nigeria The essence of border closure is for the better more of the Nigerian economy and trade policies, including supporting local industries to grow. The study adopted Protectionist Theory by Kahler (1985), the theory anchored on the ideas whereby a countries lean towards autarky and self- dependence. The research adopted primary and secondary methods of data collection. For the primary data questionnaire was administered to some members of Farmers Association of Nigeria (AFAN), Nigerian Immigration Service (NIS), Nigerian Custom Service, Market Trader’s Association of Nigeria, National Boundary Commission and National Union of Road Transport Workers to enable us have their opinion on the subject matter, while the secondary data were collected through content analysis in the study. Protectionist theory was adopted as theoretical underpinning to explain the topic under review. The finding of the study revealed that the rise in food prices and inflation was one of the most immediate and significant negative outcomes of the Nigeria-Niger border closure. With the restriction on the movement of goods across the border, the supply of essential food products, such as rice, millet, maize, and other staples, drastically dwindled. This scarcity led to a sharp increase in prices, affecting markets across the country, particularly in Northern Nigeria, which shares close trade ties with Niger. This inflation in food prices placed immense pressure on household budgets, especially for low-income families, pushing many deeper into poverty. Therefore, the paper recommends that; Government should reduce reliance on food imports, Nigeria should focus on increasing domestic food production. This can be achieved through targeted financial support to smallholder farmers, facilitating access to credit, and providing essential inputs such as seeds fertilizers, and equipment to boost agricultural productivity.