A vein stabilizer device for holding a vein in place and receiving a needle to be inserted therein. The vein stabilizer device includes a base tube defined by a hollow tube body having two receiving flanges disposed on opposing sides of its outer surface and two detachable extension arms which are each defined by an elongated member having a proximal end attached to one of the receiving flanges, an angled bend, and distal end which includes a removable tip. In operation, a user slides a syringe into the base tube with the needle facing towards and extending almost to the removable tips of the opposing extension arms. The removable tips are then placed against the skin on either side of the target vein, allowing the needle to be inserted into a target vein that is held between the removable tips.