Firm curtain hook

The utility model discloses a firm curtain hook which comprises a T-shaped sliding block and a hanging ring, the lower portion of the T-shaped sliding block is fixedly connected with a hanging plate, the two sides of the hanging plate are each provided with a vertically-through inserting hole, the hanging ring is provided with a cut-off part, and the two ends of the hanging ring are each provided with a first arc-shaped part bent towards the interior of the hanging ring. According to the curtain hanging device, when the hanging rings are subjected to downward component force for pulling the curtain, the component force can enable the insertion rods and the insertion holes to move relatively, namely, the hanging plates push the second arc-shaped parts upwards, the first arc-shaped parts extend towards the sides, close to the inner surfaces, of the hanging rings to form second arc-shaped parts, insertion rods are arranged below the second arc-shaped parts, and the insertion rods are inserted into the insertion