Same-sex marriage is allowed in Australia, but if one party is from China, can they still get married and immigrate after marriage?

The first thing that needs to be corrected is that Australia has not officially introduced a bill to allow same-sex legal marriage.

Australia recognizes two marriage relationships: legal marriage and de facto marriage, the latter being cohabitation. Because Australia does not recognize same-sex marriage at present, in the definition of immigration law, same-sex couples cannot apply for Australian immigration in the form of married spouses. However, the application can be made according to the situation of de facto marriage, and the evidence required by the immigration bureau at the trial is the same, regardless of the opposite sex or the same sex.