Abstract: The most suitable color intensity and reaction condition ofthe Griess photometric method were discussed．The resuits indicated that the concentration of NaN02 should be in the range of 0～1．0 μg/mL accord with Beer’S law，and the linear regressive equation is A = 0．7335p+0．0017，with the correlation coefficient of R =0．9976，the relative standard deviation of < 1．7％, and the recovery rate of 96％ 一103．4％．

Key words: Griess photometric method, nitrite, meat products