The invention relates to an underground oil casting pipe ground detection sensor pushing device which comprises a support, a pushing mechanism and a sensor fixing mechanism. The pushing mechanism is arranged at the rear end of the support and is supported by the support, relative motion exists in the support, and the sensor fixing mechanism is arranged at the front end of the support and used for fixing a target sensor. The sensor pushing device is used for providing ground monitoring of an oil and gas field shaft, and sealed connection between the device and a well mouth Christmas tree can be achieved through the device. A sensor is fed into the aerial corresponding position in a shaft oil lantern ring and ensures internal and external sealing and the communication between the sensor and an external system. The device is simple in structure, flexible to operate, safe and reliable.