The utility model discloses a wellhead protector, including production tree connector, slip pipe and flange, production tree connector and fracturing pipeline threaded connection, the lower part threaded connection of production tree connector the slip pipe, the surface of slip pipe lower part is for sealed, sealed face passes seal groove among the inner hole of the flange, the slip pipe bottom isconnected with tubing hanger, production tree connector bottom outer lane is provided with the boss, it is provided with spacing clamping ring to fix on the production tree connector surface, spacingclamping ring below is provided with sits a section of thick bamboo, the outside of sitting a section of thick bamboo is provided with the firmware, be connected with torque rod on the firmware, sitsection of thick bamboo female connection screwed pipe, the bottom of screwed pipe with flange fixed connection, the top of sitting a section of thick bamboo is provided with inward concave station, the concave station with the boss cooperatees. The utility model discloses realize that fracturing operations prevents that the flutter valve from by high -voltage breakdown, avoiding oil well pressureto leak, stops and reduced safety accident.