Along with the increasing of new equipment based ca pabilities, the physiological burden on the dismounted soldier keeps on growing, which leads to the limitation in the quantity and types of missio ns that can be carried out. In this research, a method ology is developed to solve the burden problem from the system assessment point of view. Comparing with other relevant research, the new methodology not only provides quantitative performance estimate of the soldier with the capability of handling fragmentary and incomplete data with hybrid format in nature (qualitative and quantitative), but also restrains the assessment complexity to an acceptable level.