The utility model discloses a leaking -wind protection apparatus for coal mine, including right branch strut, left branch strut and baffle, the one end of baffle is passed through fixing button and isinstalled inside one side of bull stick, the one end at the installation pole is installed through the activity button in one side of bull stick, the installation pole passes through the inside of welded fastening at right branch strut or left branch strut, the gear is installed through the pivot to the other end of installation pole, the connecting rod is all installed to the both sides of gear,the gangbar is installed to one side of connecting rod, through setting up the bull stick, the operating rod comprises a linkage rod, connecting rod and gear isotructure drive the bull stick rotationwith the drive power of gear, thereby it rotates to drive the baffle, with this effect that replaces the extension spring, make it can therefore not result in the effect to reduce because of the former of time, the lasting usability of device has been guaranteed, set up fixed clamp splice, the check lock lever with be wrenched an isotructure, fastener's effect has been realized, prevent because of the not hard up effect that reduces leak protection wind, convenient dismantlement simultaneously.