To provide a treating method of a black-and-white silver halide photographic sensitive material by which decrease in the carrying property of a photosensitive material or precipitation in a fixing liquid tank are prevented even in the treatment process with a small replenishing amt. and a fast processing rate, and excellent dot quality and max. density can be obtd.

A silver halide photographic sensitive material having at least one photosensitive silver halide photographic emulsion layer on a supporting body is treated in an automatic developing machine equipped with a developing tank, fixing tank and stabilizing tank. In such a method, the automatic developing machine used is equipped with 2 to 8 stabilizing tanks and a silver recovering device. The photosensitive material is treated with a fixing liquid containing no compd. of aluminum in the fixing tanks.