中国人过境是需要过境签证的，如下：
https://www.homeaffairs.gov.au/lega/lega/form/immi-faqs/do-i-need-a-visa-to-transit-through-australia




Citizens of the following countries:
Andorra, Argentina, Austria, Belgium, Brunei, Bulgaria, Canada, Chile, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Federated States of Micronesia, Fiji, Finland, France, Germany, Greece, Hungary, Iceland, Indonesia, Ireland, Italy, Japan, Kiribati, Latvia, Liechtenstein, Lithuania, Luxembourg, Malaysia, Malta, Marshall Islands, Mexico, Monaco, Nauru, Netherlands, New Zealand, Norway, Oman, Palau, Papua New Guinea, Philippines, Poland, Portugal, Qatar, Romania, Samoa, San Marino, Singapore, Slovakia, Slovenia, Solomon Islands, South Africa, South Korea, Spain, Sweden, Switzerland, Thailand, Tonga, Tuvalu, United Arab Emirates, United Kingdom (including its colonies), United States of America, Uruguay, Vanuatu and Vatican.





Residents of Hong Kong holding a Hong Kong Special Administrative Region (HKSAR) passport or a British National Overseas (BNO) passport.





Residents of Taiwan holding a passport issued by the authorities of Taiwan (other than passports purported to be official or diplomatic passports).




Indian official passport holders.




Diplomatic passport holders, excluding holders of:




Arab Non-National Passports; and




Diplomatic passports from the following countries:
Afghanistan, Algeria, Angola, Bahrain, Comoros, Democratic People's Republic of Korea, Egypt, Iran, Iraq, Jordan, Kuwait, Lebanon, Libya, Madagascar, Mauritania, Morocco, Pakistan, Russian Federation, Saudi Arabia, Sierra Leone, Somalia, Sudan, Syria, Tunisia, Yemen and Zimbabwe.