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 (511, 523) 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 (511, 523) 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 (511, 523) 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 (511, 523) 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.