You can't get married if you and your cousin are collateral blood relatives within three generations. If you and your cousin are not collateral blood relatives within three generations, you can get married. The Civil Code clearly stipulates that lineal blood relatives and collateral blood relatives within three generations cannot get married. Whether it is legal to marry your cousin depends on your marriage registration with your cousin. The marriage registration office will ask both parties to sign a statement stating that there are no lineal blood relatives and blood relatives within three generations. If a man and a woman register for marriage without telling the truth, the marriage is also invalid. According to China's civil code, you can't marry your cousin. China's civil code stipulates that direct blood relatives or collateral blood relatives within three generations are forbidden to get married.

This is because it is considered that the children of both parties may have some diseases due to ethical and medical consanguineous marriage. The marriage with a cousin is invalid. According to China's current marriage law, blood within three generations is not allowed to get married. The daughter of you and your father's sister is Di three generations of blood. You can't get married according to the marriage law. The risk of genetic diseases will be greatly increased in the offspring of consanguineous marriages.

Conditions for marriage registration:

1. Both parties to the marriage registration must reach the legal age of marriage, that is, men must be 22 years old and women must be 20 years old;

2. Both parties must be voluntary and have no spouse;

3. Both parties have no lineal blood relatives or collateral blood relatives within three generations;

4. Both parties have no diseases that are medically considered unsuitable for marriage;

5. One or both parties are permanent residents in their respective jurisdictions;

6. Both parties must apply for marriage registration at the marriage registration office where one party's permanent residence is located at the same time, and may not entrust others to act as agents.

The procedure of marriage registration is as follows:

1. Both men and women who require marriage registration apply to the county civil affairs bureau or the town people's marriage registration authority with the required documents;

2. Both parties apply to the marriage registration office in person, and each party fills in a declaration of application for marriage registration;

3. Both parties must personally sign the declarant column in the application for marriage registration in front of the marriage registrar;

4. The marriage registration authority shall examine the documents and statements submitted by both parties, and register those that meet the requirements for marriage registration.

legal ground

Article 1048 of the Civil Code

Lineal blood relatives or collateral blood relatives within three generations are prohibited from getting married.

Article 105 1

In any of the following circumstances, the marriage is invalid:

(1) Bigamy;

(2) Having a family relationship that prohibits marriage;

(three) did not reach the legal age for marriage.

Article 1054

An invalid or revoked marriage is not legally binding from the beginning, and there are no rights and obligations of husband and wife between the parties. Property acquired during cohabitation shall be handled by the parties through agreement; If the agreement fails, the people's court shall make a judgment according to the principle of taking care of the innocent party. Article 6 of the Regulations on Marriage Registration

In any of the following circumstances, the marriage registration authority shall not register the marriage:

Below the legal age for marriage;

(2) Involuntary;

(3) One or both parties have spouses;

(4) Belonging to lineal blood relatives or collateral blood relatives within three generations;

(five) suffering from diseases that are medically considered unsuitable for marriage.