Abstract: The construction of the grassland survey and monitoring system in the grassland survey and monitoring system in the new period is urgent and necessary, which is the basic work of the grassland grass class and small class division with the forest map and spot. By drawing on the technology of mapping spot regionalization in forest resource survey and combining with the characteristics of grassland, this paper preliminarily explores the method of mapping spot regionalization suitable for grassland resource survey.Compared with the traditional grassland survey, the application of patch division technology can further increase the scientificity and rationality of the survey results, as well as the convenience of resource management, and also effectively promote the integrated development of forestry and grassland.