Aiming　at　the　moment　and　strain　energy　responses　of　deployable　tape　spring　in　the　folding　process,　sensitivity　analysis　of　mechanical　attribute　of　the　tape　spring　was　carried　out　utilizing　primary　and　secondary　sequence　method　and　Sobol　sensitivity　theory,　and　the　results　were　verified　by　software　Isight.　Effects　from　geometric　parameters　on　mechanical　attribute　were　comprehensively　compared,　meanwhile,　the　sensitivities　of　mechanical　attributes　to　geometric　parameters　were　discussed　and　the　merit　and　shortcoming　of　the　methodologies　were　compared.　This　research　provides　the　basis　and　reference　for　structural　design　and　parametric　optimization　of　tape　spring.　©　2018,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.