Abstract: Secure Hash Algorithm (SHA) is an important tool in practice of cryptography such as digital signature, and it has been widely applied in electronic business etc. the information security fields, etc. MD6 is one of the several candidates for the SHA-3 competition. How to implement MD6 efficiently is an urgent question to be answered. This paper presents a parallel analysis of MD6, and a fast realization on GPU platform, so as to provide an easy way to implementing SHA quickly and efficiently.