A rolling curtain, characterized by comprising: a roller , wherein a stop strip is provided on an inner wall of the roller and a half open curtain cloth groove is provided on an outer wall of the roller ; a curtain cloth , wherein an upper end of the curtain cloth is fixedly connected in the curtain cloth groove ; a motor , mounted at an inner side of a first end of the roller and configured for driving the roller to rotate to lift the curtain cloth ; a spiral spring device , mounted at an inner side of a second end of the roller and comprising a fixed shaft , an outer rotatable frame , a plurality of spiral springs and a inserting pin , wherein a shaft hole is provided on the outer rotatable frame , the fixed shaft is inserted in the shaft hole of the outer rotatable frame , the plurality of the spiral springs are sleeved on the fixed shaft side by side, a plurality of vertical partition plates for separating adjacent spiral springs are provided on the outer rotatable frame , a first end of the spiral spring is fixedly connected to the fixed shaft and a second end of the spiral spring fixedly connected the outer rotatable frame , a rotation stop notch is provided on the outer rotatable frame , the rotation stop notch is engaged with the stop strip on the roller , the outer rotatable frame is synchronously rotated with the roller , pin holes corresponding to each other are provided on the fixed shaft and the outer rotatable frame respectively, the spiral spring is mounted in the outer rotatable frame , and the inserting pin is inserted in the pin holes of the fixed shaft and the outer rotatable frame for fixedly connecting the fixed shaft to the outer rotatable frame ; and a first fixed bracket and a second fixed bracket , which are positioned at two ends of the roller respectively and are configured for fixing the spiral spring device and the motor respectively. a roller , wherein a stop strip is provided on an inner wall of the roller and a half open curtain cloth groove is provided on an outer wall of the roller ; a curtain cloth , wherein an upper end of the curtain cloth is fixedly connected in the curtain cloth groove ; a motor , mounted at an inner side of a first end of the roller and configured for driving the roller to rotate to lift the curtain cloth ; a spiral spring device , mounted at an inner side of a second end of the roller and comprising a fixed shaft , an outer rotatable frame , a plurality of spiral springs and a inserting pin , wherein a shaft hole is provided on the outer rotatable frame , the fixed shaft is inserted in the shaft hole of the outer rotatable frame , the plurality of the spiral springs are sleeved on the fixed shaft side by side, a plurality of vertical partition plates for separating adjacent spiral springs are provided on the outer rotatable frame , a first end of the spiral spring is fixedly connected to the fixed shaft and a second end of the spiral spring fixedly connected the outer rotatable frame , a rotation stop notch is provided on the outer rotatable frame , the rotation stop notch is engaged with the stop strip on the roller , the outer rotatable frame is synchronously rotated with the roller , pin holes corresponding to each other are provided on the fixed shaft and the outer rotatable frame respectively, the spiral spring is mounted in the outer rotatable frame , and the inserting pin is inserted in the pin holes of the fixed shaft and the outer rotatable frame for fixedly connecting the fixed shaft to the outer rotatable frame ; and a first fixed bracket and a second fixed bracket , which are positioned at two ends of the roller respectively and are configured for fixing the spiral spring device and the motor respectively. <EOS>