The invention discloses a reactor control room system which comprises a digitizer control system at the background of a control room, and a man-machine interaction facility, a digitizer control systemsignal output unit, a digitizer control system signal input unit and a fault diagnosis unit which are arranged in the control room, wherein the man-machine interaction facility specifically comprisesa computer operator working station and a voice recognition unit. Due to adoption of a fault diagnosis and voice recognition system of the reactor control room system disclosed by the invention, automatic voice broadcasting of fault information and issuing of voice operation instructions can be achieved, the working efficiency of an operator can be improved, mal-operation can be reduced, layout can be optimized, and demands on the space of the control room can be reduced. The working efficiency of operators in abnormal situations can be effectively improved, the probability of mal-operation of the operators can be reduced, meanwhile, the number of operator working stations and operators in the control room can be reduced, and furthermore, the demands on the space of a main control room can be reduced.