The invention relates to a threading needle with a needle hole capable of being elastically enlarged. The threading needle comprises a needle tail, the needle hole, a needle body and a needle tip; theneedle tail is arranged at the upper end of the needle hole, the needle body is arranged at the lower end of the needle hole, the needle tip is arranged at the lower end of the needle body, the needle hole and the needle tail are integrally formed, the needle hole and the needle body are integrally formed, and the needle body and the needle tip are integrally formed; the needle hole comprises a plurality of elastic rods, the upper ends of the elastic rods are connected with the needle tail, and the lower ends of the elastic rods are connected with the needle body. The needle hole is made of metal materials which can be elastically deformed, and metal materials of the needle hole are fine steel wires or fine iron wires or titanium alloy; the top of the needle tail is of a smooth hemispherical structure. The interior of the needle hole is of a hollow cylindrical structure, and the elastic rods are arranged around a central axis at equal distances and at equal intervals. According to thethreading needle, the adopted needle hole can be elastically enlarged to provide convenience for threading without relying on any other tools, and the threading needle is convenient to use and practical. When the threading needle is in use, the needle tail is lightly pressed to make the needle hole enlarged, and the needle hole can clamp a fine thread; when the threading needle is not in use, thethreading needle can be hung or inserted into a thread ball and cannot easily fall or disappear.