Plantar　pressure　analysis　is　a　human　force　line　evaluation　method　that　has　emerged　in　recent　years,　but　the　main　mechanical　index　currently　used　is　the　statistical　mechanical　characteristics　of　the　center　of　gravity　of　both　feet,　which　loses　the　spatial　distribution　information　and　cannot　effectively　reflect　regional　structural　force　differences.　Therefore,　a　method　of　human　body　force　line　evaluation　based　on　the　characteristic　distribution　index　of　plantar　pressure　is　proposed　in　this　paper.　This　paper　experimentally　analyzed　the　plantar　pressure　of　15　healthy　people　with　no　severe　walking　dysfunction　of　the　lower　limbs　and　no　serious　bony　deformity　of　the　foot.　The　results　showed　that　graphical　features　such　as　roundness,　rectangularity,　and　the　ratio　of　long　and　short　axes　have　good　stability　and　validity　in　static　assessment.　Using　these　graphical　features　for　human　body　line　assessment　effectively　solved　the　problem　that　the　traditional　mechanical　indexes　lost　spatial　distribution　information　and　could　not　effectively　reflect　the　regional　structural　force　differences.