Sorry, I'm an Australian citizen. Can I apply for my parents to go to Australia? I have a brother and a sister, both in the mainland.

It's a little complicated. Check the requirements of 143 and 173 for paid immigrants and queued immigrants. At present, it takes more than 15 years to queue up for immigrants, and paying parents have to pay about 70 thousand Australian dollars. I can't remember the details.

All parents' immigrant visa applications need to meet the "remaining family members test" standard. To meet this standard, the main applicant needs to meet the following conditions:

I) At least half of the applicant's children and stepchildren are Australian citizens or permanent residents and live in Australia, or

Ii) There are more children living permanently in Australia than in other countries.

As far as I know, your parents have three children, only you are an Australian citizen. It doesn't seem to meet this requirement, but if you have two children in Australia, you will meet the requirements. So if your brothers and sisters have PR in Australia, they will meet the application conditions. I hope it will help you. It's time to visit Sydney.