Kbar NN three body resonance has been studied by Kbar N N - pi Sigma N coupled channel Faddeev equation. The S-matrix pole has been investigated using the analytically continued scattering amplitude on the unphysical Riemann sheet. As a result we found a three-body resonance of strange dibaryon system with the binding energy and width B ~ 76 MeV and Gamma ~ 54MeV.