As an important ecological factor,fire is closely related to our life.Grassland fire has been studied both at home and abroad.This paper discussed the research achievements of grassland fire,and deeply explored from the influence factors,ecological effects,space-time distribution pattern,grassland fire management, remote sensing monitoring,early warning and risk assessment.On the one hand,it provided strong scientific basis for relevant decision-making departments,thus ensured the standardized management of grassland fire and the balance of grassland ecological environment.On the other hand,it provided a basis for the study on the occurrence and development of grassland fire and their impact on relevant regions and even future global climate change,and then contributed to the research on current global climate change. Due to the limitations in the field of study and the discontinuity problems of research time,the research trend of grassland fire was finally analyzed,and the research difficulties and development trends of fire ecological factors on global climate change and fire prediction models were prospected.