Forest combustibility is the foundation for fire danger rating system, as well as the theoretical basis for fuel reduction treatments. The combustibility of 18 forest types in Beijing Badaling Forest Farm were studied in this research based on the surface dead fuel. The fuel load, fuel moisture, and integrated attributes were analyzed. Combined with the latest scientific research achievement in this area, the actual situation of forest farm, as well as the sample plots survey, the combustibility of different forest types were discussed and classified. The result shows that the combustibility evaluation which based on integrated attributes is more reasonable, and the forest fire danger map is finished based on the integrated attributes. Also, the surface dead fuel load and fuel moisture analysis can be used as the theoretical basis for the fuel management.