Previous　researches　in　activities-decision　have　more　in-depth　study　in　context　of　individuals,　while　less　work　has　been　done　within　household　activity　decisions.　The　structural　equation　model　is　applied　to　analyze　the　relationship　of　three　household　activity　categories　on　holiday　using　data　from　2009　Jinan　travel　survey.　Six　attributes　were　first　chosen　as　exogenous　variables　for　the　structural　equation　model.　Meanwhile,　six　activity　characteristic　indexes　were　selected　as　endogenous　variables　including　activity　duration　time　and　activity　times　in　three　kinds　of　activity,　hereby　Subsistence　activity,　maintenance　activity　and　discretionary　activity.　respectively.　Then,　the　paper　attempted　to　discuss　the　correlation　of　all　types　of　activities　behavior　through　analyzing　not　only　the　influence　of　household　economics　and　family　members　factors　on　activity　but　the　correlation　of　holiday　activities.　The　research　shows　that　complex　relationships　among　composition　of　the　family,　economic　status,　and　activities-decision　can　be　captured　by　the　structural　equation　model　structure.　Specifically,　the　results　show　that　flexibility　of　three　categories　activities　will　affect　the　activities　of　decision-making.　©　2011　China　Association　for　Science　and　Technology.