The utility model relates to a sensor fixing seat. The sensor fixing seat comprises a fixing seat main body; wherein a mounting cavity for embedding a sensor is formed in the fixing seat main body; the top of the fixing seat main body is detachably connected with a pressing piece used for pressing the sensor in the mounting cavity to the surface of a to-be-measured object; the bottom of the fixingbase body is provided with a bonding part used for being bonded and fixed to the surface of an object to be measured, the installation cavity penetrates through the fixing base body in the height direction of the fixing base body, and at least one of the pressing piece and the fixing base body is provided with a positioning part used for positioning the sensor in the direction perpendicular to the height direction of the fixing base body. The sensor is pressed on the surface of the to-be-detected object through the pressing piece, so that stable fixation of the sensor on the surface of the to-be-detected object is ensured, contact between the sensor and the surface of the to-be-detected object is also ensured, and the accuracy of sensor temperature detection is improved.