Provided is a safety apparatus for medical needles which is free from accidental exposure of an acuate top end contaminated with a blood, etc. from a lower portion thereof. The safety apparatus includes a shield member (3) having a shield hub (35), a shield member connection hub (40H) and leg portions (31,32), the leg portions (31,32) being capable of extending from the first folded position to the second extended position, a needle (21) being to be inserted in the space (40S) of the above shield member connection hub (40H) when the leg portions (31,32) are in the first folded position, the wall (43DW) of the above slide-member (42) being to be pulled into the shield member connection hub (40H) when the leg portions (31,32) are extended up to the second extended position, whereby the apparatus is so formed that it can prevent the distal end (23) of the needle (21) from being exposed to an outside.
