A rapid and convenient method based on conductometry is applied to flow injection analysis for measuring salt content in food. The development of a flow system was investigated for determining the salt content in processed foods with added salt. A linear correlation between the peak conductivity and the salt content was obtained with high correlation coefficient (r=0.9998). It is possible to analyze about 70 samples within an hour using the method, and the coefficient of variation for 10 successive injections was 0.22%. The proposed method is very simple and rapid, and it requires no amount of skill in measuring.