Lap-type adjustable track

The utility model discloses a lap-type adjustable track, and relates to a lap-type track adjusting structure of an electric-drive curtain. The lap-type adjustable track comprises a fixed track, a lap track, adjusting sliders and locking screws. The lap track is nested outside the fixed track, the adjusting sliders are placed in the lap track in a filling mode, and the locking screws are used for fixedly connecting the fixed track with the lap track. The fixed track of the electric-drive curtain is lapped through the lap track, and an embedded-type track structure with adjustable length is formed; the lap-type adjustable track is used for track adjustment of the electric-drive curtain, the electric-drive curtain can be adjusted in size according to different mounting requirements, and assembling and mounting of the electric-drive curtain are realized in a DIY (do it yourself) mode.