The invention discloses a method and device of optimizing alkaline-surfactant-polymer flooding displacement schemes, and solves the problems that increased amplitude values of stage recovery percent obtained from each of the schemes are poor in relative property and lack in scientificity. The method of optimizing the alkaline-surfactant-polymer flooding displacement schemes is characterized in that according to actual conditions of a mine to be simulated, according to the water flooding recovery efficiency before the mine is subjected to the polymer flooding, that is, the recovery percent of awater flooding stage, and a cut-off time node of the water flooding in a laboratory experiment is determined; the error range of the stage recovery percent of the water flooding stage is controlled at +/-0.01% before carrying out comparison experiment schemes of the alkaline-surfactant-polymer flooding; at the stage of polymer flooding, the reasonable injection speed is determined by quantitativeand velocity experiments to reach the recovery percent of the mine polymer flooding stage, then quantitative polymer is injected by the reasonable injection speed, so that the recovery percent of thepolymer flooding stage is controlled; and the remaining oil saturation before starting the alkaline-surfactant-polymer flooding stage remains the same on the basis of above water flooding and the polymer flooding, and then an effective scheme comparison is carried out.