Brick is one of the important material used for construction. The Strength of bricks is depending on the moisture content in different bricks. Nowaday seepage in wall is measure issue. And it is difficult to analyze it by non destructive testing. FFT analyzer is one of the prime instrument which will give the percentage moisture content by weight and frequency technique. Experimental technique to measure moisture content is time consuming. By this technique we can save our time and use it at site before construction.