Curtain crossing device

According to the technical scheme, the curtain crossing device comprises a guide rail and is characterized in that the crossing device is connected to the guide rail in a sliding mode, the crossing device is composed of two sliders which are oppositely arranged in the opposite directions, and each slider comprises a sliding part and a crossing part which are integrally manufactured; three hook holes are formed in the slider at equal intervals in the length direction of the slider; a connecting block is arranged on a sliding part of the slider; notches are formed in the two sides of the connecting block; a connecting groove matched with the connecting block is formed in the sliding part of the other slider; elastic fixing pieces matched with the notches are connected to the two sides in theconnecting groove in a rotating mode, a plurality of limiting grooves are formed in the peripheries of the fixing pieces, limiting blocks used for being matched with the limiting grooves are arrangedin the connecting groove,