Abstract In this paper, we study the persistence, boundedness, convergence, invariance and global asymptotic behavior of positive solutions second-order difference system $$\begin{aligned} x_{n+1}&= \alpha _1 + a e ^{-x_{n-1}} b y_{n} ^{-y_{n-1}},\\ y_{n+1}&= _2 +c ^{-y_{n-1}}+ d x_{n} \quad n=0,1,2,\ldots \end{aligned}$$ <mml:mr...