This study will attempt to describe the origin of the legal institutes linked to the collection of alimony in Chile that were born as a response to the social and legal problems of the early nineteenth century related to this. Mainly from the economic and cultural conflicts that affected childhood; the unequal legal status that children had according to whether or not they were born under the marriage of their parents; and, the insufficiency of the Civil Code to protect the right to maintenance that gave way to the special laws that arose between the years 1912 and 1935.