Illegitimate child claim system is in the realm of paternity law established an important system of the parent child re-lationship between children and their biological parents born out of wedlock,but the marriage law of our country has not yet confirmed this system.In order to improve China's family law system and protection of unmarried children born to the legiti-mate rights and interests,China should be in reference to the relevant legislation of foreign countries and regions based on con-...