The utility model provides a wind belt traction, include: the support component is disposed under the wind belt for support wind belt bottom flagging when not ventilating, fixed part is connected respectively with the both ends of support component for install the support component in the tunnel. The wind belt arranges in tunnel roof arch that wind belt traction sets up in the wind belt below, andthe restriction wind belt is not flagging naturally when ventilating, guarantees that the tunnel clear space can satisfy equipment operation and the current requirement of traffic.