Divorce before immigration.

No, you need a household registration book to apply.

According to the provisions of the Marriage Registration Ordinance:

Article 4 When a mainland resident marries, both men and women shall go through the marriage registration formalities at the marriage registration office where one of the permanent residences is located.

If a China citizen marries a foreigner in the Mainland, and a mainland resident marries a Hong Kong resident, a Macao resident, a Taiwan Province resident or an overseas Chinese in the Mainland, both men and women shall * * * go through the marriage registration office where the permanent residence of the mainland resident is located.

Article 5 Mainland residents who apply for marriage registration shall submit the following documents and supporting materials:

(1) My household registration book and ID card;

(2) A signed statement that I have no spouse and no direct blood relationship with the other party and collateral blood relationship within three generations.

Hong Kong residents, Macao residents and Taiwan Province residents shall submit the following documents and supporting materials when registering for marriage:

(1) My valid passport and ID card;

(2) A statement notarized by the notary office of the place of residence that I have no spouse and no lineal blood relationship with the other party and collateral blood relationship within three generations.

Overseas Chinese applying for marriage registration shall issue the following documents and supporting materials:

(1) my valid passport;

(2) A certificate issued by the notary office or competent authority of the host country and certified by the Chinese people's * * and China's embassy (consulate) in that country that I have no spouse and no lineal blood relatives and collateral blood relatives within three generations, or a certificate issued by the Chinese people's * * and China's embassy (consulate) in that country that I have no spouse and collateral blood relatives within three generations.

Therefore, it is necessary to issue household registration books, identity cards and passports of both parties, a signed statement that I have no spouse and no lineal blood relatives and collateral blood relatives within three generations with the other party, and a certificate issued by the notary office or competent authority of the country of residence and certified by the Chinese embassy (consulate) in that country that I have no spouse and no lineal blood relatives and collateral blood relatives within three generations with the other party. Or the certificate issued by the people's Republic of China and the embassy (consulate) of China in that country that I have no spouse and have no direct blood relationship with the other party and collateral blood relationship within three generations, and go to the marriage registration office where the permanent residence of mainland residents is located for marriage registration.