To provide a high temperature operating valve capable of effectively heating a flow passage of a flow passage body to a high temperature condition and capable of eliminating influence by the heat on other parts except the flow passage body.

This high temperature operating valve is provided with the flow passage body 2 having the flow passage 3 through which a fluid flows, a valve element actuation part 12 having a valve element 17 for opening and closing the flow passage 3, a heat receiving part 23 provided on the flow passage body 2 and receiving the heat energy imparted to the flow passage 3, and heat insulating parts 16, 19 and 25 for shutting off heat transmission from the flow passage body 2 to parts except the flow passage body 2. Therefore, the temperature of the flow passage body 2 is raised when the heat energy is imparted to the heat receiving part 23. The transmission of the heat of the flow passage body 2 to the part except the flow passage body 2 is insulated by the heat insulating parts 13, 16 and 25, and thereby the temperature of the flow passage 3 of the flow passage body 2 can be effectively raised. Further, the influence by the heat transmission to the part other than the flow passage 2 of which temperature is raised can be avoided.