Hello, I'd like to ask, I want to go to Canada to study design as a graduate student. Can I get a three-year work visa after two years, and then apply for immigration after 1 year?

You used to apply for immigration through studying abroad, which is different from pure skilled immigration. This has nothing to do with schools, but with provincial policies. The key is that you should complete the specific study. Ontario completed two years of study, obtained a master's degree, and can apply for immigration without work experience. BC province is limited to medical and scientific fields.