The cost of studying abroad for doctoral students in Hong Kong depends on the school and major. Generally speaking, the tuition fee for doctoral programs in HKU is about HK$ 6,543.8+0.7 million to HK$ 6,543.8+0.9 million, while the tuition fee for non-central funded private universities is between HK$ 6,543.8+0.2 million and HK$ 6,543.8+0.4 million.

In addition, according to students' socio-economic status, students can enjoy soft measures or benefits, including loans, scholarships and other financial assistance, when studying for doctoral programs at the University of Hong Kong. Generally speaking, loans can offset 70% or more of the expenses, while scholarships can offset the same amount of tuition.

In addition, students can also get employment subsidies from universities and government agencies, such as two-year employment subsidies from the government. The University of Hong Kong also has employment subsidies for students, which can help students pay tuition or other expenses.

So generally speaking, the cost of studying abroad for doctoral students in Hong Kong varies from school to school and from major to major. Generally speaking, the tuition fee is at least HK$ 6,543,800+,but cost credit can also be obtained through soft measures or benefits.