Australia is considered to be a desert. That fact coupled with the actual number of deserts present in Australia makes it the continent with the most deserts.

Which country has most of the deserts?

China has the highest number of deserts (13), followed by Pakistan (11) and Kazakhstan (10).

Which is the hottest continent on Earth?

Antarctica records continent′s hottest temperature ever | News | DW | 07.02. 2020.