Abstract: As an important part of blast-resistant structure, blast-resistant door will suffer from high-pressure blast load in an accidental explosion. Whether or not the blast-resistant door design is reasonable will directly affect the whole blast-resistant structure. In order to make the blast-resistant door design more reasonable and feasible, the design methods provided in the 《Code for design of blast resistant chamber structures》 were discussed. Meanwhile, with an example of the blast-resistant door design, the design process was given. It can provide help for solving problems occurring in similar projects.