孩子不是自己的不一定有抚养权。如果夫妻一方不是孩子的亲身父亲或母亲的情况下，在双方离婚后，孩子一般是由亲生父母抚养。但是如果一方在抚养孩子多年以后才发现孩子非亲生，而且在多年的抚养中已经形成了抚养关系，那么就可以争取孩子的抚养权。所以有没有孩子抚养权要根据具体情况而定。并且法律允许抚养的一方可以向亲生父母要求赔偿抚养中的相关费用。

Children who are not their own do not necessarily have custody. If one of the hu**and and wife is not the child's biological father or mother, after the divorce, the child is generally raised by the biological parents. However, if one party finds that the child is not born after years of raising the child, and has formed a custody relationship in years of raising, then it can fight for the custody of the child. So the right to support children depends on the specific situation. In addition, the party who is allowed by law to raise the child can claim compensation from the biological parents for the relevant expenses in raising the child.