A medical puncture needle comprising includes: a rod-shaped body portion; and a blade surface formed at a distal end portion of the rod-shaped body portion. The blade surface includes: a first blade surface portion that is inclined with respect to a central axis of the body portion and extends to a tip, and a second blade surface portion that is formed on a back side of the first blade surface portion. A blade edge extending to the tip is formed by a ridgeline at which the first blade surface portion intersects the second blade surface portion. The second blade surface portion comprises a first plane and a second plane having different angles with respect to a virtual plane including the central axis passing through the tip at an orthogonal cross-section that is orthogonal to the central axis.