With global warming， the frequent occurrence of grassland fires poses a serious threat to the environment in pastoral areas. The behavior of pastoral householders is of great significance for judging the risks of grassland fires. This study represents an analysis of fire risk on the herder micro-scale， with herders from 57 villages in Dongwuzhumuqin Banner as the research object. We calculated the natural disaster index on the basis of a survey of herders and （geographic information system， GIS） analyses. Then， we used principal component analysis， analytic hierarchy processes， and weighted multivariate analysis methods to analyze the grassland fire risk assessment index system at the herder scale. We generated a distribution map of grassland fire risk levels in the Dongwuzhumuqin Banner， and verified the accuracy of the risk assessment zoning map using fire spots. The main results were as follows： 1） The weights of the four first-level grassland fire risk assessment indicators in the Dongwuzhumuqin Banner were as follows： 25.85% dangerous， 28.86% exposed， 19.17% vulnerable， and 26.12% disaster prevention and reduction capacity. 2） The overall risk of grassland fires in the Dongwuzhumuqin Banner showed an increasing trend from west to east. The vast majority （86.07%） of the research area was in medium-risk and high-risk fire areas. 3） The fire spots in the study area were distributed along the border line from 2001 to 2018， and increased in abundance from south to north. The burned area was 2338.25 km2. The frequency of fires on the national border line was concentrated between two and three times. The proportion of fire spots in the middle and high-risk fire areas was 79.99%. Our analyses indicate that the accuracy of these risk zoning research results is relatively high. The results of this study provide a scientific basis for local government to formulate specific disaster prevention and mitigation policies for grassland fires.