The invention provides a fine-adjustment remainder validation fault-tolerant high-pass/band-pass filtering processing method based on input. The method includes a first step of respectively transmitting collected data x to a first branch, a second branch and a remainder branch, wherein the first branch and the second branch are two completely identical high-pass/band-pass filter branches, and the remainder branch is a high-pass/band-pass filter branch based on remainder processing, a second step of carrying out modular processing to x, a third step of adding one to input data of the first branch, the second branch and the remainder branch when a modular result is zero, and then carrying out fault-tolerant filtering processing based on remainder validation to novel input data after adding one through fine-adjustment, and a fourth step of directly carrying out fault-tolerant filtering processing based on the remainder validation to the novel input data of the first branch, the second branch and the remainder branch when the modular result is not zero. The fine-adjustment remainder validation fault-tolerant high-pass/band-pass filtering processing method based on input can avoid the problem of missing detection of faults caused by single-event upset happening to a filter coefficient, and has the advantages of being simple in operation and high in result accuracy.