In this paper, we study the existence of weak solution for singular fractional Schrödinger system in R N involving Trudinger-Moser nonlinearity as follows:where ), and H has exponential growth and does not satisfy the Ambrosetti-Rabinowitz condition. Note that our problem is the lack of compactness. First, we give a version of vanishing lemma due to Lions;using that result and a version of Mountain pass theorem without (PS) condition, we obtain the existence of nontrivial solution to the above system. When H satisfies the Ambrosetti-Rabinowitz condition, motivated by the work of Chen et al.,we study the existence of nontrivial solution to singular Schrödinger system involving the fractional (p 1 , p)-Laplace and Trudinger-Moser nonlinearity. In our best knowledge, this is the first time the above problems are studied.