A marker formed on a stent which is to be mounted within a human body, the marker being formed without applying gold plating or gold foil onto the stent and allowing the position of the stent in the human body to be confirmed by a recognition means. A marker (A, B) used to confirm the position in a human body of a stent (C) consisting of wires is formed by fitting pipes (10-12), which consist of a raw material which can be recognized by a recognition means, on a portion at which at least two wires constituting the stent (C) are located close to each other. The stent (C) comprises a stent main wire (1) formed in a zigzag pattern, and the pipes (10-12) are fitted to zigzag-shaped turn-back sections (E) of the stent main wire (1).