Painless slow-expanding piercing needle and method for using same

A painless slow-expanding piercing needle, comprising:

• a piercing needle with a diameter not greater than 0.3 mm;
• a wire having a first end and a second end, wherein the first end has a greater diameter than the second end, the second end is connected to the piercing needle, and the first end is curled into a spiral tube shape;
• a wire curling rod which has a third end and a fourth end, wherein the third end has a smaller diameter than the fourth end, the wire curling rod is used for curling the first end and the second end of the wire into the spiral tube shape and can assist in introducing a jewelry rod, wherein the first end is curled into a first spiral tube, and the second end is curled into a second spiral tube;
• and
• wherein after piercing from one side to form a wound, the piercing needle is separated from the second end, and the second end is curled into a spiral tube shape and curled up at the other side of the wound of a user;
• and after the wound is healed, uncurling the first end by a certain length, moving the wire toward the second end to a proper position and curling the first end and the second end tightly are performed for several times until hole expansion is achieved.