A method of increasing speed of a silver halide color photosensitive material. The photosensitive material has, on a support, a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a red-sensitive silver halide emulsion layer, and a nonsensitive layer. The method comprises adding, to the emulsion layer or the nonsensitive layer, a compound represented by formula (M) or (C): ##STR00001## in the formula (M), R.sub.1 represents H or a substituent, Z represents a group of non-metallic atoms required to form a 5-membered azole ring containing 2 to 4 nitrogen atoms, and X represents H or a substituent, and in the formula (C), Za represents --NH-- or --CH(R.sub.3)--, Zb and Zc represent --C(R.sub.4).dbd. or --N.dbd., R.sub.1, R.sub.2 and R.sub.3 represent an electron attractive group having a Hammett constant .sigma.p of 0.2 to 1.0, R.sub.4 represents H or substituent, and X represents H or a substituent.