Abstract: The present invention discloses a window curtain rolling device that comprises a guide module, a fixed casing, a movable coupling module, a coupling module, and a rotary module, wherein a guide rod of the guide module having a fixed casing is coupled with the movable coupling module, and the movable coupling module includes a corresponding guide groove around the periphery of the movable coupling module for allowing a rolling bead covered by the coupling module to slide or latch along the guide groove or at other positions and directions, so that when a user operates a pulling up and close device coupled to the embedding member at another end of the fixed casing, the user can control the speed of rolling the window curtain effectively.