Las crisis financieras generan efectos macroeconomicos nocivos que terminan por afectar el nivel de vida de la mayoria de la poblacion. La identificacion, prevencion o minimizacion de sus efectos es tarea de las autoridades economicas, que utilizan distintas herramientas de diagnostico. En este articulo se explica la metodologia de Goldstein, Kaminsky y Reinhart para construir un sistema de indicadores de alerta temprana de crisis financieras, que introduce conceptos innovadores para la realizacion del analisis y, ademas, esta disenada para ser aplicada en los paises considerados mercados emergentes. Keywords: Financial crises generate injurious macroeconomic effects that finish affecting the standard of life of the majority of the population. Identification, prevention, or minimization of their effects is task of the economic authorities that use different tools for diagnosis. In this article the methodology of Goldstein, Kaminsky and Reinhart for the construction of indicators of early warning system of financial crises is explained, introducing some innovating concepts for the accomplishment of the analysis and, in addition, it is designed to be applied in the developing countries so-called emerging markets.