To provide an elevation device of a roll-up curtain not generating biased raising of a curtain cloth during the rolling up operation of the curtain cloth while making it possible to attach and detach an elevating cord to and from the curtain cloth.

In the roll-up curtain in which the curtain cloth is hung down and supported from a head box, the elevating cord suspended down from the head box are passed through a plurality of passing through portions attached to the curtain cloth, the lower end of the elevating cord is attached to the lower end portion of the curtain cloth 2, and the curtain cloth can be rolled up by elevating and lowering the elevating cord by an operation device, one strip portion 9a constituting a slide fastener 8 is attached to the curtain cloth in a vertical direction, the passing through portions 4 are secured to the other strip portion 9b, and the elevating cord 3 is passed through the passing through portions 4.