This experiment was conducted to study the effects of substituting ration with fish soluble absorbed briquette ash feed and its economic values on growing pig. A total number of 60 pigs was divided into 4 treatments: Control, T1, T2, and T3 each substitution with 0, 3, 5 and 10% of ration with fish soluble absorbed briquette ash feed. The results were summarized as follows; 1. Average daily feed intake was highest it T3(1.61kg) and T2(1.59kg) $gt; T1(1.55kg) $gt; control(1.54kg) respectively showing that the feed intake increases according to the increasing level of concentrated fish soluble. 2. Average daily gains of pigs fed fish soluble absorbed briquette ash Iced were significantly (p $lt;0.01) higher compared to those of pigs fed control diet. In addition, feed conversion was also improved significantly(p $lt;0.01) showing that the best result was in T2 group. The optimum level of substitution seems to he 5% though the difference between treatments was not statistically significant. 3. The digestibility didn`t show significant differences between the experimental one diets. 4. There was no significant changes in chemical composition during storage period of nearly one month. 5. In economic analysis feed cost required per kg body weight gain was cut down by 19.14 Won in TI; 24.62 Won in T2 ; 21.10⁴Won in T3 than that in the control diet.