The invention provides a rooting method for oil well emergent spraying and a rooting mechanism used in the rooting method, and relates to a rooting method applied to an oil well emergent spraying device and a rooting method used in the rooting method. By the rooting method and the rooting mechanism, the problems that existing rooting techniques of the oil well emergent spraying device are not applicable to wells with casing heads not exposed out of the ground during use and the like are solved. The rooting method includes connecting the emergent spraying device with the rooting mechanism, and enabling a ground anchor of the rooting mechanism to enter the ground so as to connect the rooting mechanism with the ground. The rooting mechanism used in the rooting method comprises a fixing platform, a transmission mechanism and the ground anchor. The ground anchor is provided with anchor teeth similar to male threads. The rooting method and the rooting mechanism have the advantages of remote safe environment operation, wide application range, convenience and rapidness in use, stable and reliable anchoring force and the like, and are mainly applied to blowout handling operations of the petroleum industry.