The invention provides a control algorithm accelerated calculation method for nuclear power plant full-range simulators. The method comprises the following steps that firstly, a system receives data sent by a model gateway and sends the data to N lower computer algorithm simulators, wherein the period is 100 ms-2 s, the sent data includes algorithm input data and/or an acceleration instruction flag, and N>=1; secondly, after receiving the data, the lower computer algorithm simulators parse the current data and extract the algorithm input data and/or the acceleration instruction flag; thirdly, according to the extracted data, the lower computer algorithm simulators determine whether there is an accelerated instruction flag, and if there is an accelerated instruction flag, the lower computer algorithm simulators return an acceleration instruction to the analog gateway for confirmation; fourthly, according to the algorithm input data, the lower computer algorithm simulators execute first algorithm logic, if an accelerated instruction flag exists, the fifth step is executed, otherwise, the sixth step is executed; fifthly, the lower computer algorithm simulators execute second algorithm logic; sixthly, the lower computer algorithm simulators send the algorithm result to the system; seventhly, the system packs the algorithm result and puts it into the output data area of the model gateway; eighthly, the algorithm ends.