Can I still use my China passport after becoming an Australian citizen?

No, a friend of mine became a Canadian citizen and went back to China to get a China passport. However, when she left the customs a month later, it was found that there was no Chinese visa on the Canadian passport, and she took out her China passport. The customs found that the Canadian visa on it was invalid (if she got a Canadian passport, the Canadian visa on China passport would be invalid), so she was kept by the customs.

Later, his domestic account was cancelled and his China passport was confiscated. It took him more than half a month to leave.

I suggest you enter the customs from Hong Kong and then go back to Australia.

Many friends who have joined foreign nationalities have left Hong Kong.

"By the way, not only has my friend's passport not expired, but his five-year permanent residence visa (PR, that is, green card) has not expired. But she has a certificate issued by the Australian government, which recognizes her as an Australian citizen. She hasn't applied for an Australian passport yet, and she should have entered Beijing when she returned to China. I wonder if she can use a China passport in this case? "

If this is the case, in principle, you can use your China passport to return to China before the PR visa expires. However, when you check in at Sydney airport, you will see your passport and visa. If you get your citizenship card, your China passport will be crossed off on the computer at the registration office, showing that you are already an Australian citizen, and you may be in trouble.

The last time my friend got PR, when he applied for boarding pass at Sydney airport, the computer showed that he had become an Australian citizen. Later, it was discovered that there was an error in the computer before he applied for boarding pass with China passport.

I have explained all kinds of situations, please consider them in combination with your actual situation.