The invention discloses a heavy oil thermal recovery wellhead high-temperature-resistant pressure transmitter, which comprises a connecting head cover, wherein the lower part of the connecting head cover is provided with a digital display disc; the lower part of the digital display disc is provided with a sensor; a case is arranged outside the sensor; the sensor and the case are fixed through a fixing cross beam; a sapphire core body is arranged in the sensor; the lower part of the sensor is connected with a transmission sleeve; the lower part of the transmission sleeve is connected with a thermocouple sleeve; and an overtemperature protection pipe is arranged in the peripheral direction between the thermocouple sleeve and a thermocouple. The heavy oil thermal recovery wellhead high-temperature-resistant pressure transmitter has the following beneficial effects that 1, sapphire has unique physical features and is selected to be used as the instrument core body of the high-temperature-resistant pressure transmitter; the high-temperature-resistant and high-pressure-resistant requirements are met; an instrument is arranged on a wellhead; and in the technical process, the real-time monitoring on the temperature and the pressure in the whole heavy oil thermal recovery process is realized; and 2, an R113 solution is arranged in the outer peripheral direction of the thermocouple sleeve and is gasified after being heated, and the heat transmission and conduction can be realized.