Space dose distribution and inhabitant absorbed dose rate in typical residential area induced by indium-192, which based on physics parameter of China Institute of Atomic Energy industrial radiography indium-192 source is calculated by Monte Carlo methods code MCNP. Results show that horizontal absorbed dose rate with concrete wall is 12.2000 μGy/h and without it is 2090.0000 μGy/h, vertical absorbed dose rate attenuates with exponential law, that absorbed dose rate of inhabitant who bide over 3 floor in 2# dwelling house is under the limit v...