With the objective of identifying and specifying the medicinal plants most used by pregnant women and in the different stages of the puerperium; and characterize the forms of use of medicinal plants in the period of gestation and, in the puerperium of the native communities of the zone 7-Loja-Ecuador, this book intends initially to make a bibliographic review on the use of medicinal plants themselves that will establish the ancestral therapeutic uses, of the different species of the ecosystem, to recover the ancestral culture in the management of medicinal plants in the locations of intervention, especially Saraguro and Zamora, native zones of Loja-Ecuador. Later, through an investigative study, the optimal forms of preparation and use will be established in order to apply them correctly and thus take advantage of the properties of each of the parts of the medicinal plants.