The invention relates to a nuclear power data monitoring method and device, computer equipment and a storage medium. The method comprises the following steps: receiving first monitoring data based ona current nuclear power operation environment sent by measurement equipment; obtaining second monitoring data, wherein the second monitoring data are monitoring data obtained by performing simulationon the current nuclear power operation environment; calculating a measurement error value according to the first monitoring data and the corresponding second monitoring data; and when the measurementerror value does not exceed an error threshold, displaying the first monitoring data. By adopting the method, the monitoring result accuracy can be improved.