A medical needle (10) is provided with a needle body (12) and a protector (16) including a housing space (60) which houses the needle body (12) after puncture of the needle body (12) by relative movement of the needle body (12) in an axial direction. The protector (16) has an annular recess (96) in the entire circumference in the circumferential direction of an inner face in the housing space (60) so as to accumulate blood that spatters from the needle body (12).
