Abstract: There were many Lauraceae plants in China, and many reports about the serious disease caused by Phytophthora cinnamomi were from abroard, however few studies were conducted in China. The author reviewed the five characters of Ph. cinnamomi, include taxonomic status, distribution and identification methods, genetic relationship, and life cycle of Ph. cinnamomi, which can provide an important reference for further studying hazards to Lauraceae in China.(1)An important species plant for Lauraceae which were vulnerable to damage of Ph. cinnamomi was to investigate the occurrence of disease, so that the distribution of Ph. cinnamomi was clear.(2)Sensitivity of Ph. cinnamomi to phosphate from different place was to study.(3)Genetic characteristics of strains for different phosphate sensitivity were to study, so that the mechanism of phosphate was identified.