The invention relates to a method capable of judging polymer solution concentration and oil reservoir matching quickly. The method includes preparing a series of polymer solutions with concentrationsranking from low to high from polymers and water, selecting nucleopore filter membranes matching with oil reservoir holes in size, and determining filtering factors of the polymer solutions passing through the nucleopore filter membranes; judging that the polymer solutions are injectable when the volume of the filtering factors and the polymer solutions passing through the nucleopore filter membranes reaches 300 mL; determining the polymer solution concentrations matching with the oil reservoir hole sizes. The method is capable of judging the suitable polymer solution concentrations for polymer flooding of different blocks, shortening an experiment period and simplifying result judgment so as to provide experimental data for pilot experiments of blocks quickly.