Rolling aluminium alloyed screen window

The utility model discloses a freely telescopic rolling screen window which is characterized in that a screen window is arranged on a drum and can be pulled out and retracted under the action of a coil spring; the screen window moves in an upper and a lower groove strips; during movement, the balance of the screen window is kept through pulleys on both ends of a side strip provided with a rope; the window screen can be stopped at any place and can not be rebounded. Compared with the traditional rolling screen window, the utility model has the advantages of less damage, long service time, large stretching distance, etc. because of large stretching and reoccupying space. The freely telescopic rolling screen window can be arranged on doors and windows with any size and also has the advantages of beautiful appearance, neatness and convenient use.