The invention relates to a method for collocating computer workstations in a main control room of a nuclear power plant. To ensure economic efficiency and security of nuclear power plant operation, working status of each computer workstation is continuously tested under a computer workstation control mode in the method. Under normal working conditions, if all computer workstations cannot work normally, the computer workstation control mode is switched to a conventional control panel control mode; and while under accidental working conditions, if computer workstations in normally working are less than two, then the switching action is performed. A scheme of the invention can reliably ensure switching time of the control mode in the main control room of the nuclear power plant. Performing the switching action as required not only ensures safe operation of the nuclear power plant, but also improves the economic efficiency of the nuclear power plant operation.