A　walker　is　a　tool　that　uses　the　person＇s　own　remaining　locomotion　capability　to　provide　support　while　walking.　The　user＇s　operating　comfort　determines　the　utilization　rate　and　auxiliary　effect　of　the　device.　Users＇　different　operating　postures　and　different　walking　styles　bring　different　operating　feelings　to　users.　However,　few　people　have　explored　the　visual　analysis　method　of　the　user＇s　operating　comfort　of　the　walker.　The　purpose　of　this　study　is　to　provide　an　intuitive　method　for　analyzing　the　user　comfort　of　walkers　by　using　a　motion　capture　system　and　upper　limb　motion　dexterity,　and　to　provide　solutions　for　human-robot　interaction　strategies.　Ten　healthy　male　volunteers　without　upper　limb　diseases　were　tested　with　standard　walker　and　front-wheel　walker　respectively.　Based　on　the　kinematic　model　proposed　in　this　paper,　the　upper　limb　motion　trajectory　is　measured　by　the　VICON　motion　capture　system,　and　the　user＇s　comfort　in　operating　the　walker　is　analyzed　using　the　wrist　point　motion　track　tangent　and　manipulability　ellipsoid.　The　wrist　point　motion　track　tangent　and　motion　ability　can　intuitively　analyze　the　user＇s　operating　comfort　at　any　stage.　The　results　show　that　there　is　a　deviation　between　the　wrist　point　motion　track　tangent　and　the　optimal　motion　direction　in　the　assisted　gait,　which　is　related　to　the　structure　and　operation　mode　of　the　walker.　The　research　method　provided　by　this　experiment　can　further　understand　the　user＇s　operation　rules　during　the　operation　of　the　walker,　and　is　of　great　significance　to　improve　the　user＇s　operation　comfort　and　control　smoothness.　©　2023　Technical　Committee　on　Control　Theory,　Chinese　Association　of　Automation.