Can different generations with the same surname get married?

Inbreeding is forbidden, and you can't get married within five generations of the same surname, so it belongs to inbreeding. A little further, it should be ok. However, if they belong to the same clan and have different generations, it will be difficult, but not impossible.

First, the necessary conditions for marriage are:

(1) Both men and women are completely voluntary. The new marriage law stipulates that "marriage must be completely voluntary by both men and women, and neither party is allowed to force the other, nor is any third party allowed to interfere." This is the concrete expression of the principle of freedom of marriage on the issue of marriage. The completely voluntary demand of both men and women means that both men and women are voluntary, not wishful thinking; Men and women are voluntary, not necessarily with the consent of their parents or a third party; Both men and women are completely voluntary, not reluctantly agreed.

(2) reaching the legal age for marriage. The legal age for marriage refers to the minimum age for marriage stipulated by law. The new marriage law stipulates that "the age of marriage shall not be earlier than 22 for men and 20 for women." Compared with contemporary foreign legislation, the legal age of marriage in China is higher, which is determined by China's current national conditions. After reaching the legal age for marriage, both men and women have the right to decide whether and when to get married. It can be seen that compared with the forced marriage system of forced early marriage in ancient China, the current marriage law in China is a marriage license system that advocates late marriage.

(3) Conforming to the principle of monogamy. According to the principle of monogamy, both parties who apply for marriage need the original spouse, only unmarried, widowed or divorced. A man and a woman violate the union of monogamy and have no legal effect of marriage.

Second, the conditions for prohibiting marriage

(1) lineal blood relatives and collateral blood relatives within three generations;

(2) Suffering from diseases that are medically considered unsuitable for marriage.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 1046 Marriage shall be voluntary by both men and women, and it is forbidden for either party to force the other, and no organization or individual may interfere.

Article 1047 The age of marriage shall not be earlier than 22 for men and 20 for women.

1048th lineal blood relatives or collateral blood relatives within three generations are prohibited from getting married.

Article 1049 If both men and women want to get married, they should apply for marriage registration in person at the marriage registration office. Those who meet the requirements of this law shall be registered and issued a marriage certificate. The marriage relationship is established when the marriage registration is completed. Those who have not registered for marriage shall re-register.