Supply chain management can be viewed as an important part of a company's strategic strategy for increasing efficiency, results, and profitability. The aim of this paper is to us the fuzzy DEMATEL method to examine the impact of IT innovation on the operations of supply chain management of food industry in Nigeria. The study obtained sixteen (16) perspectives of impact of IT innovation on food industry SC management as obtain from literature and brain stormy of experts. A fuzzy Linguistic scale was developed and applies it to food manufacturing firms in Nigeria to test the level of the impact of IT innovation on supply chain management. The questionnaire designed for pairwise comparison to evaluate the influence of each score, where scores of 0, 1, 2, 3 and 4 represent: (no influence), (Very low influence), (low influence), (high influence) and (very high influence), respectively. Twelve experts were asked to complete the questionnaire comprises of 6 general managers, 6 Supply Chain managers all of food industry. Then the Fuzzy DEMATEL method was applied to analyze the importance of criteria and the casual relations among the criteria constructed. The result showed that the advanced planning system had the most impact and the strongest link to other criteria. As a result, APS is a key rationale and key criteria that influence other criteria and driving factors to solve problems.