A curtain airbag device for a vehicle having a lightweight, simplified, and inexpensive structure can prevent a curtain airbag from being caught by a pillar garnish when the airbag is deployed and inflated, and can restrict the deployment direction of the airbag. The curtain airbag may have sub-chambers formed therein that are folded together with the curtain airbag, and disposed adjacently thereto. The sub-chambers have a communication path formed therein that communicates with the curtain airbag. The curtain airbag is provided with tab cloth strips for supporting and fixing the curtain airbag. The tab cloth strips have an attachment section formed thereon and an annular binding section that binds together the curtain airbag and the sub-chambers. The binding section is provided with a tearing section to be torn when the curtain airbag is deployed and inflated and an anchoring section anchoring the airbag to the vehicle body side.