The provisions on children's rights in the Universal Declaration of Human Rights mainly include the right of children to receive special care, the equal rights of children born out of wedlock, and the right of children to education. In the process of forming these rights clauses, the differences in the political, economic and cultural backgrounds of various countries were taken into consideration, and their wording was finally established after numerous revisions. The constitutional norms of Latin American countries and their draft recommendations were important references in the process of establishing children's rights. Their marginal status on the world political arena did not prevent these countries from playing an active and prominent role in drafting the Universal Declaration of Human Rights. By reviewing the drafting process of the Universal Declaration of Human Rights, we can have a clearer understanding of the relevant expressions and wording, and thus can better understand the connotation of children's rights.