This study investigates pesantren people's understanding of halal products and halal product guarantee systems according to Law No. 33, of the Year 2014. These people's comprehension of halal products is essential since considering their substantial number, they held a considerable role in realizing the government-designated halal product guarantee system. This study used descriptive qualitative design classified as field research. The analysis results identify that pesantren people utilize the Islamic law (Fiqh) standards and understanding to ensure whether a product is halal. Those understandings and standards transform into the fundamental value that establishes the halal value chain in pesantren. Therefore, pesantren people own immense comprehension and awareness of the halal product. However, in relation to the halal product guarantee system determined by the government, pesantren still needs socialization and capacity development.