The improved acupuncture needle structure of the present invention comprises a hollow sleeve and a needle body. The hollow sleeve has an elongated shape and includes a ring wall and a hollow portion, the hollow portion is formed by the ring wall, and the ring wall is convexly provided with two protrusions toward the hollow portion, and the two protrusions are spaced apart from each other by a space； The body is disposed in a long shape and disposed on the hollow portion, and the needle body includes an integral portion and a needle portion, the needle portion is attached to the body portion, and the body portion is engaged with the space where the two protrusions are spaced apart from each other.本新型之針灸針改良結構包括一中空套管以及一針體。其中，中空套管呈長條狀並包括一環壁及一中空部，中空部由環壁圍繞形成，且環壁朝向中空部凸設有二凸起，此二凸起彼此間隔出一空間；針體呈長條狀並置設於中空部，且針體包括一體部及一針部，針部附接於體部，且體部卡合於二凸起所彼此間隔出之空間。
