The utility model discloses a be used for high temperature resistant pressure transmitter of viscous crude thermal recovery well head, including connecting the skull, to connect the skull lower part and be provided with the digital display dish, the lower part of digital display dish is provided with the sensor, and the sensor is provided with the shell outward, and is fixed through fixed cross beam between its and the shell, is provided with the sapphire core in the sensor, sensor sub -unit connection transmission sleeve pipe, transmission sleeve pipe sub -unit connection thermo -well, connect that circumference is provided with the excess temperature protection tube between thermo -well and the thermocouple. The utility model has following beneficial effects: : 1, because the unique physical characteristic of sapphire chooses for use the sapphire to become the instrument core as the warm -pressing, satisfies high temperature resistant high pressure resistant requirement, installs the instrument on well head process flow, realize the real -time supervision of viscous crude thermal recovery overall process temperature, pressure. 2, the thermo -well periphery is to setting up R113 solution, and the gasification of being heated of R113 solution can realize heat and pass the conduction.