Grassland fires have brought serious threats to the lives and properties of herders and the ecological environment of herding areas. In this paper, taking the pastoral village of Khan Obo as an example, from the micro-scale of pastoral households, based on the socio-economic data of herders obtained from the field survey and combined with meteorological and remote sensing data, we used the natural disaster risk index method, the principal component analysis method and the weighted comprehensive method to construct the grassland fire risk evaluation index system of Khan Obo village and obtained the grassland fire risk distribution map of Khan Obo village. The results showed that the risk of grassland fire in Khan Obo village decreases from the central area to the surrounding area, the risk in the northwestern area is higher than that in the eastern and southern areas, and the medium and high risk areas account for 49.85% of the total area of the study area. The research results provide a new perspective and reference for grassland fire risk evaluation from the microscopic scale.