Brazil is the second largest producer of soybean. In 2002, Asian Soybean Rust (ASR) was detected by the first time in Brazil. The development of a disease depends on three items: (1) virulent and/or aggressive pathogen, (2) susceptible host, and (3) favorable environment. The objective of this research is to analyze how these three items affect the presence and intensity of the ASR. As initial part of the project, started in March of 2016, a literature review is presented and discussed.