The invention provides a numerical operation implementation method for Huffman coding, which comprises the following steps of: counting the occurrence probability of each character in data to obtain acharacter set and a corresponding probability set; calculating the coding length of each character in the character set of the data, abbreviating the coding length sequence of each character as a code length set, and calculating the code length sequence according to the probability set and the code length set; according to the code length sequence, Huffman codes are output in a numerical operation mode, the code length sequence of a character set to be coded is calculated in a particularly simple and convenient mode, then the code length sequence is sorted, and codes of the character set aredirectly generated; under the condition that the Huffman tree is prevented from being constructed, the coding effect the same as that of classic Huffman normal form coding is obtained, redundant calculation and storage in construction of the Huffman tree are eliminated, and the coding efficiency is improved. The invention further provides a numerical operation implementation circuit for Huffman coding, and the implementation circuit is simple, easy to implement and low in energy consumption.