We have come to know how we can use BL-algebra to construct a Block Code and how we may use it for encoding purposes. In this paper, we explore a method to decode the BL-code with the help of the predefined order between the BL-algebra L and the generated code C. While encoding, we take an arbitrary non-empty subset P on which the BL-function is defined. To start the decoding process, we establish a relation between the distance and weights of two codewords in C. We reconstruct the graph of the BL-algebra and find out the l-subsets of P