Abstract: Well control devices are key devices for drilling safety, and their functions should be fully utilized and maximized to ensure the reliability of overflow shut-in and well killing. Starting from the function and control of the well control device combinations, the latest foreign API standards, IADC standards and domestic standards are analyzed, and three core contents related to the intrinsic safety of well control were thoroughly studied, that is, the combination pattern of wellhead devices, combination pattern of well control manifolds, and the handle position of three-position four-way directional control valve. The problems existing in five foreign drilling well control standards and seven domestic standards were pointed out, and specific suggestions were given, so as to provide reference for the revision and implementation of well control standards.