The utility model belongs to the technical field of medical injection instruments, and particularly relates to an
insulin pen injection needle capable of preventing needle stick injury, which comprises an
insulin pen main body, and the end part of the
insulin pen main body is connected with a needle instrument; the
insulin pen further comprises a supporting cylinder, the
insulin pen body is fixedly installed in the supporting cylinder, a
telescopic cylinder is arranged at the opening of the end of the supporting cylinder in a telescopic mode through an elastic piece, the
telescopic cylinder is used for protecting the needling instrument, and when the
insulin pen body is not used, the needling instrument retracts into the
telescopic cylinder under the supporting effect of the elastic piece; the protection effect on the insulin pen main body is achieved; a contact ring is detachably installed at the end of the telescopic cylinder, and when
insulin injection is conducted, through the arranged contact ring, friction
contact force exists between the contact ring and the
skin of a patient, and pre-positioning can be conducted during
insulin injection.