The invention discloses a multistage rate regulation method of turbine feed forward, and belongs to the technical field of electric system automatic control. The regulation method aims at solving theproblem that the automatic gain control regulation performance on the side of a turbine can not meet the requirement when loads are varied within a large range in the prior art. The regulation methodparticularly comprises the steps that an AGC load instruction and a unit actual load are obtained, and a deviation value delta N is calculated; a threshold value L in a load adding section is obtained; the range of the deviation value delta N is judged, if delta N is greater than or equal to -L, and is less than or equal to L, an output power signal serves as the unit actual load; otherwise, a rate limitation parameter M is calculated in real time; and the range of the deviation value delta N is judged, if delta N is greater than or equal to -M and is less than or equal to M, a load output value when the load of the maximum correction rate is added serves as the output power signal, otherwise, a load output value when the load of the minimum correction rate is added serves as the output power signal. The regulation method is applied to a thermal power unit.