The invention relates to a high-speed rail piece type channel beam wind shielding structure. The existing ordinary-speed rail bridge wind shielding measures cannot satisfy a windproof requirement of a high-speed rail bridge in a strong wind area. Vertical columns are arranged on channel beam webs with intervals; wind shielding plates are fixed between the adjacent vertical columns; the wind shielding plates are provided with wind shielding plate opening holes; the wind shielding plates are arranged between the adjacent vertical columns; the wind shielding plates are provided with wind shielding plate opening holes; the wind shielding plates are cross corrugated steel plates, the opening percentage is 20%, the height of every plate is 0.5m, the length is 2.0m, the thickness is 4mm, and the wave height is 70mm; the vertical parallel combination overall height of the seven plates is 3.5m. The rail piece type channel beam wind shielding structure is formed by the channel beam, the vertical columns and the wind shielding plates, the beam webs and the wind shielding structures on the beam webs commonly play a role in proofing cross wind, the cross wind function acting on a train body is changed, the critical wind speed for train safe operation is improved, meanwhile the height of a wind shield is higher than that of a contact line of an overhead line system, the train operation stability is increased, and the operation fault is reduced.