A safety blood-collection needle, comprising a needle base, a needle hub, a flexible tube, a straight needle, a straight needle shaft, and a needle head the safety blood-collection needle further comprises a protective cover, a slider, a handle, and a position limiting mechanism one end of the needle base is fixed and is in communication with the needle head the slider movably sleeved on the needle base the position limiting mechanism is arranged on the slider and needle base. The slider is arranged on the needle base and slides in order to cover the needle head, so that safety is greatly increased when handling the needle head following blood collection the use of a spring-type needle head is avoided, thus reducing the suffering of the patient.