Legal analysis: If step-parents and step-children form a relationship of upbringing and education, then step-children have the obligation to support step-father or step-mother. When supporting, we should not only give financial and material help, but also give care and love in life and spirit. Children's support for their parents can be divided into material support and spiritual support, and they need to take care of the special needs of the elderly.

Legal basis: Article 49 of the Constitution of People's Republic of China (PRC) marriage, family, mother and children are protected by the state. Both husband and wife have the obligation to carry out family planning. Parents have the obligation to raise and educate their minor children, and adult children have the obligation to support and assist their parents. It is forbidden to undermine the freedom of marriage and abuse the elderly, women and children.