The invention provides an instruction reconstruction algorithm considering saturation of a controlled variable, relates to control instruction reconstruction technologies, and can be used to solve theproblem that single control distribution strategy at present is hard to adapt to complex conditions. Control distribution is carried out in a reference distribution manner without consideration of the saturation condition, and the saturation condition of physical control surfaces after distribution is determined; if only one physical control surface is saturated after distribution, distribution is carried out again according to the control instruction reconstruction algorithm; if two or more physical control surfaces are saturated after distribution, control distribution is carried out in thedistribution manner in a last control period; and if there are still two or more saturated physical control surfaces after control distribution in the last step, distribution is carried out accordingto the reference control distribution manner.