The invention discloses an infrared focal plane detector blind pixel correction method. The method comprises the following steps: calculating an image pixel I, which serves as a center, and an initial window n*n(n=3) formed by surrounding pixels; calculating a window median M, and judging whether the I-M is larger than a preset threshold value v_thd; if I-M>v_thd fails, judging whether n is larger than a preset threshold value n_thd, and if n >n_thd, judging the point is a non-blind pixel, and turning to a next pixel point; if n >n_thd fails, enlarging the window n*n(n=n+2), and calculating the window median M; if I-M> v_thd, skipping to the next step; enlarging the window n*n(n=n+2), and calculating the window median M1; and judging whether the I-M1 is larger than the v_thd, if not, judging the point is a non-blind pixel, and if so, judging the point is a blind pixel, using M to replace the pixel and turning to the next pixel point. The basic idea is a variable window blind pixel elimination method; and the method, based on characteristics of blind pixels in the practical application, does not need to store the blind pixel information, and can finish correction of all blind pixels without iteration for any qualified detector at any time.