We present the analysis of photometric and spectroscopic variation, and orbital period study of the late-type contact binary system V1191 Cyg. The system is found to be a contact binary system having strange configuration with very small mass ratio and short orbital period comparing with the other members of the same group. We determined a new set of stellar physical parameters for hot and cooler companion as M_h_=0.13(1)M_{sun}, M_c=1.29(8)M_{sun}, R_h=0.52(15)R_{sun}, R_c=1.31(18)R_{sun}, L_h=0.46(25)L_{sun}, L_c=2.71(80)L_{sun}, and the separation between the components a=2.20(8)R{sun} from the simultaneous solution of the light and radial velocity curves. Analyses of the mid-eclipses time of the system indicate a period increase of dP/dt=1.3(1)x10^-6^days/yr that can be interpreted in terms of the high mass transfer dM/dt=2.0(4)x10^-7^M{sun}_/yr from the less massive component to the more massive one.