A device for positioning a telescopic doll in a packing box includes a telescopic doll and a packing box. The telescopic doll has two feet each with a sole, a seat formed on the sole, and a first hook pivotally mounted on the seat. Two fixed legs respectively extend upwards from the feet. Two first rod are telescopically and respectively mounted on the fixed legs. Each first rod has a line extending from a bottom end of the first rod through the shaft and connected to the first hook. Two second rods are telescopically and respectively mounted on the first rods. The packing box has a bottom plate and a second hook formed on the bottom plate and detachably engaged with the first hook. Whereby, the doll can be easily unfolded and taken out from the packing box.