1. The father-son relationship can be proved by household registration book and paternity test. The proof of father-son relationship can be handled at the police station of the original birth declaration account. Raising children is the legal obligation of parents, and parents undertake the obligation of guardianship, upbringing, education and protection of children. Both husband and wife have equal rights to raise, educate and protect minor children, and jointly undertake the obligations of raising, educating and protecting minor children.
2. Legal basis: Article 26 of the Civil Code of People's Republic of China (PRC).
Parents have the obligation to support, educate and protect their minor children.
Adult children have the obligation to support, help and protect their parents.
Second, how to write the certificate that proves the relationship between father and son?
1. How do you write the proof of paternity? This is to certify that the gender, nationality and ID number of my son are true.
2. Materials to prove the father-son relationship: identity documents, work documents, power of attorney, and identity documents of the trustee. The local police station where the original birth declaration account is located shall issue a certificate of paternity according to the father's name registered on the birth certificate. The proof of father-son relationship plays an important role in many cases. The proof of father-son relationship should be carried out in strict accordance with the regulations. However, the father-son relationship cannot be severed, so there is no proof of severing the father-son relationship.