The properties of grazed grassland soils are frequently degraded in tropical zones. This work aimed to review the literature on the theory and results of sampling and analysis of the spatial variability of pasture soil properties in the world and Ecuador. The methodology, results, and discussion of 15 articles on the subject, available in the following databases: Scopus, SciELO, ScienceDirect, Scimago Journal & Country Rank, Dialnet, and SpringerLink; and the respective theory of 5 books were reviewed. It was found that worldwide there are soil sampling works that evaluate the spatial variability of soil properties; at the national level, sampling does not consider this variability. It is essential to conduct research in Ecuador on the spatial variability of the properties of pasture soils, which will allow reliable decisions to be made for their management and conservation.