The utility model discloses a spiral shell sucker -rod pumping well head blowout preventer, including sucker rod blowout preventer, setting up the coupling assembling at sucker rod blowout preventer'supper and lower terminal surface, coupling assembling includes the two public nipple joints of the flat that connects gradually, clamp assembly, oil recovery wellhead flange gland respectively, and the both ends of the two public nipple joints of flat are fixed respectively on sucker rod blowout preventer and clamp assembly. The utility model discloses an improve current screw pump oil productionwellhead assembly, through with spiral shell sucker -rod pumping well head drive arrangement and KY65 25 the split is carried out to the big cross of oil recovery wellhead assembly, sets up between the two the utility model discloses, when oil pipe domestic demand holds high -pressure operation, close the preventer, great improvement the highest pressure -bearing of oil pipe with the import to that has realized emergency prevents spouting the processing.