Mainland residents apply for Hong Kong identity cards.

1) is an application for residence in Hong Kong, referred to as one-way permit.

-But whether you can apply for this kind of situation depends on the entry-exit inquiry at the place where your account is located. As a rule, if you are left unattended in the Mainland, you can apply.

To apply for residence in Hong Kong, you can apply if you meet the following conditions:

(a) one of the spouses has settled in Hong Kong or Macao; You can also apply to accompany1children under 8 years old.

(2) Having reached the age of 18 but under the age of 60, having parents who have settled in Hong Kong and Macao and have reached the age of 60, and having no children in Hong Kong and Macao, and needing their care.

(3) Those who have reached the age of 60 and have no children in the Mainland, and need to take refuge in children over the age of 18 who have settled in Hong Kong or Macao.

(four) under the age of eighteen, need to take refuge in Hong Kong or Macao parents.

(5) Children of permanent residents of Hong Kong or Macao.

The term "children without Hong Kong or Macao" mentioned in item (2) above refers to children who have no permanent resident status in Hong Kong or Macao or have been approved by the exit-entry administration department of the public security organ to settle in Hong Kong or Macao.

2) Only when you enter Hong Kong with valid documents and stay in Hong Kong for more than 180 days can you apply for a Hong Kong identity card. (For example, if you enter Hong Kong with valid documents such as student endorsement and work endorsement, you can apply for an ID card. If you stay illegally, you can't apply for a Hong Kong ID card. )

3) SAR passport and Hong Kong identity card are two completely different documents.

Passport is a kind of travel document (for example, you need it if you want to go abroad)

-Hong Kong identity card (for use in Hong Kong, identification and use in the Mainland through the Hong Kong Customs)

Supplement your question:

1) Apply for entry and exit at the place where the household registration is located. (Your hometown)

2) According to what you said, if you are left unattended in the Mainland (there are no relatives in the Mainland), then you can (in item 4 above) apply for the unaccompanied children to take refuge in Hong Kong as relatives.