Soldiers in heavy load marching scenarios face an increasing conflict between the demand for carrying more supplies and equipment and the limit of their physical load capacity. From the perspective of scenario analysis, the study systematically identified and categorized the constituent elements and typical types of heavy load marching scenarios, gained insights into the basic information and demographic characteristics of the target users, identified actual needs in heavy load marching scenarios. Through comprehensively analyzing scenario elements and converting them into corresponding design opportunities, a design strategy for portable tools in heavy load marching scenarios was proposed.