The invention discloses a medical appliance, in particular a safe intravenous infusion needle. The safe intravenous infusion needle comprises a connecting pipe; the upper end of the connecting pipe is connected with a needle bed; the lower end of the connecting pipe is connected with a puncture needle head and a needle wing; an initial protective pipe is sleeved outside the puncture needle head; and the safe intravenous infusion needle is characterized in that: an anti-stab sleeve is additionally arranged outside the puncture needle head; one side of the anti-stab sleeve is provided with an elongated slot; and the needle wing is positioned inside the elongated slot. The safe intravenous infusion needle has no difference in the puncture use from a common intravenous infusion needle; however, after use, the needle head can be fully wrapped by the anti-stab sleeve; therefore, the safe intravenous infusion needle effectively prevents the occurrence of stab, reduces the probability of spreading disease through blood, is very convenient to use, can achieve good effect of protecting medical personnel and others, has simple manufacturing and low cost, and cannot increase economic burden for patients.