This study aimed to investigate the effects of using gravel supplementation in chickens. chickens. Gravel to see if it will mean for the development of chicken gizzard, also known one is brains. Gizzard to grind food to have a resolution to the digestion efficiency. The purpose of the study is to adjust the chicken to tolerate low-quality food. The current raw material prices are higher. The farmers who raise chickens with low incomes. The study was conducted of agencies, both domestic and abroad. And data analysis The results are consistent with that. Influence of gravel that affect the development of the gizzard is real and growing than chickens without the gravel. As production of chicken, human beings consumed together. The productivity of the health benefits of chicken with high protein foods. So poultry production to the market for consumption are important. The study of chicken for the benefit and good yield. By extra gravel in chicken is the best because the chicken does not require a high cost of producing chicken. Also known to use available objects in nature for the benefit of another. And one can not rely on chemicals to yield a good chicken. Since there are quite a lot of disadvantages such as high cost, and the key is to have an adverse effect on consumers. So the extra grit should focus on raising chickens.