A deblocking filtering method, wherein the method comprises: determining, according to a current pixel value of a to-be-filtered pixel in a picture block and pixel values of pixels in a first neighbouring partition of the to-be-filtered pixel, a first filtering offset value of the to-be-filtered pixel; performing prediction on the pixel value of the to-be-filtered pixel according to pixel values of pixels in a second neighbouring partition of the to-be-filtered pixel to obtain a prediction value of filtered value of the to-be-filtered pixel; and determining an actual filtered value of the to-be-filtered pixel according to the current pixel value, the first filtering offset value, and the prediction value of filtered value; wherein the determining an actual filtered value of the to-be-filtered pixel according to the current pixel value, the first filtering offset value, and the prediction value of filtered value comprises: computing an absolute value of a difference obtained by subtracting a sum of the prediction value of filtered value and the current pixel value from the first filtering offset value, to obtain a first absolute value, computing an absolute value of a difference obtained by subtracting the prediction value of filtered value from the current pixel value, to obtain a second absolute value, and comparing the first absolute value with the second absolute value; and determining the actual filtered value according to a comparison result, wherein the determining the actual filtered value according to a comparison result comprises: when the first absolute value is greater than the second absolute value, using a value obtained by adding a second filtering offset value Δ 2 to the current pixel value, as the actual filtered value, wherein Δ 2 = δ Δ 1, Δ 1 indicates the first filtering offset value, and -1 < δ < 1; or when the first absolute value is less than or equal to the second absolute value, using a value obtained by adding the first filtering offset value to the current pixel value, as the actual filtered value. determining, according to a current pixel value of a to-be-filtered pixel in a picture block and pixel values of pixels in a first neighbouring partition of the to-be-filtered pixel, a first filtering offset value of the to-be-filtered pixel; performing prediction on the pixel value of the to-be-filtered pixel according to pixel values of pixels in a second neighbouring partition of the to-be-filtered pixel to obtain a prediction value of filtered value of the to-be-filtered pixel; and determining an actual filtered value of the to-be-filtered pixel according to the current pixel value, the first filtering offset value, and the prediction value of filtered value; wherein the determining an actual filtered value of the to-be-filtered pixel according to the current pixel value, the first filtering offset value, and the prediction value of filtered value comprises: computing an absolute value of a difference obtained by subtracting a sum of the prediction value of filtered value and the current pixel value from the first filtering offset value, to obtain a first absolute value, computing an absolute value of a difference obtained by subtracting the prediction value of filtered value from the current pixel value, to obtain a second absolute value, and comparing the first absolute value with the second absolute value; and determining the actual filtered value according to a comparison result, wherein the determining the actual filtered value according to a comparison result comprises: when the first absolute value is greater than the second absolute value, using a value obtained by adding a second filtering offset value Δ 2 to the current pixel value, as the actual filtered value, wherein Δ 2 = δ Δ 1, Δ 1 indicates the first filtering offset value, and -1 < δ < 1; or when the first absolute value is less than or equal to the second absolute value, using a value obtained by adding the first filtering offset value to the current pixel value, as the actual filtered value. computing an absolute value of a difference obtained by subtracting a sum of the prediction value of filtered value and the current pixel value from the first filtering offset value, to obtain a first absolute value, computing an absolute value of a difference obtained by subtracting the prediction value of filtered value from the current pixel value, to obtain a second absolute value, and comparing the first absolute value with the second absolute value; and determining the actual filtered value according to a comparison result, wherein the determining the actual filtered value according to a comparison result comprises: when the first absolute value is greater than the second absolute value, using a value obtained by adding a second filtering offset value Δ 2 to the current pixel value, as the actual filtered value, wherein Δ 2 = δ Δ 1, Δ 1 indicates the first filtering offset value, and -1 < δ < 1; or when the first absolute value is less than or equal to the second absolute value, using a value obtained by adding the first filtering offset value to the current pixel value, as the actual filtered value. when the first absolute value is greater than the second absolute value, using a value obtained by adding a second filtering offset value Δ 2 to the current pixel value, as the actual filtered value, wherein Δ 2 = δ Δ 1, Δ 1 indicates the first filtering offset value, and -1 < δ < 1; or when the first absolute value is less than or equal to the second absolute value, using a value obtained by adding the first filtering offset value to the current pixel value, as the actual filtered value.