NOVELTY - The lead wire (20) has junction portion (21) that includes cathode junction (21B) that is faced opposite to anode junction (21A). Two stoppers (22A,22B) are bent and are formed to be extended at each end of cathode junction and anode junction to sidewall center (O-O) of fuel cell (10). Two stoppers are contacted with each other along with sidewall of fuel cell and are extended at end of insertion length determining unit (22), so that insertion length of junction portion is limited. Two stoppers are integrally coupled each other at end (23a) of connection portion (23).    USE - Lead wire supported in lead wire holder for fuel cell (claimed).    ADVANTAGE - The process of welding the grease line to the fuel cell can be mechanically automatized. The uniform quality of the lead wire for fuel cell can be improved. The unstable connection by the poor contact of unit fuel cell can be unraveled. The soldering process of the fuel cell can be automated and the improvement of the product productivity as well as the convenience of the assembly work can be planned.    DETAILED DESCRIPTION - The lead wire main portion is welded into outer side surface of anode electrode board (11) and cathode electrode board (12) of fuel cell. The anode and cathode electrode boards are respectively arranged at both sides of the electrolyte film (13). A connection portion is extended at each end of the junction portion. INDEPENDENT CLAIMS are included for the following:    (1) lead wire holder for fuel cell; and    (2) method for connecting lead wire to fuel cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of lead wire structure.    Fuel cell (10)    Anode electrode board (11)    Cathode electrode (12)    Electrolyte film (13)    Lead wire (20)    Junction portion (21)    Anode junction (21A)    Cathode junction (21B)    Insertion length determination unit (22)    Stoppers (22A,22B)    Connection portion (23)    End of connection portion (23a)    Sidewall center of fuel cell (O-O)