Abstract: Based on the abnormal restart event of the industrial computer of the boron meter system after operation of the nuclear power plant, the reason for the restart of the industrial computer is analyzed by building the minimum system recurrence fault for a specific boron meter industrial computer, and the upgrade of the boron meter software and the modification of the deviation alarm are proposed. The advantages and disadvantages of the two schemes to eliminate the abnormal restart of the industrial computer are summarized and analyzed. The scheme has been implemented on the nuclear power projects A and B of China General Nuclear Power Group. It has been verified to be effective after operation, and can provide reference for subsequent nuclear power projects equipped with the same type of boron meter industrial computer.