We investigate the uniaxial strain effects on the quantum spin liquid kappa-(ET)(2)Ag-2(CN)(3) which is an organic Mott insulator with a nearly regular S = 1/2 triangular lattice. The uniaxial compressive strains along the in-plane b- and c-axes suppress the semiconducting behavior and induce a Mott transition, followed by a superconducting transition at low temperatures. The simulations of band structure under the in-plane uniaxial strains suggest a significant distortion of triangular lattice. The critical temperature T-C of the superconducting transition appeared above the critical pressure of Mott transition under uniaxial strain is higher than that under hydrostatic pressure as observed in the sister compound kappa-(ET)(2)Ag-2(CN)(3). The enhancement of T-C by the distortion of triangular lattice is a common feature of superconductivity neighboring to spin liquid.