The quantum algorithm which was put forward recently has led to great insecurity of cryptographic analysis of the coding under quantum computing. The future of the code-based cryptography with anti-quantum attack properties was questioned by many people. However, in the research process, people gradually had a deep understanding of the advantages and disadvantages of its encryption scheme. At present, the code-based cryptography has become one of the most promising post-quantum cryptography schemes. The code-based encryption schemes were summarized and the existing attacks of their original schemes were analyzed. Finally, the nature of the security problem of encoding-based encryption system is analyzed, and the future development direction is expounded.