PROBLEM TO BE SOLVED: To provide an electric heating device and a method having an operation restart function. An electric heating device (20) having a plurality of electrode bodies (23) and a plurality of spacer tubes (24), the inner walls of which form a heating flow path for conducting electric heating while flowing and transporting a food material, and a heating flow. An inlet temperature sensor 31 provided near the inlet of the passage, an electrode temperature sensor 32 provided at the electrode body, an outlet temperature sensor 33 provided near the outlet of the heating flow passage, and an output of the electric heating device are controlled. And a control device 30 for performing a first heating in which the control device performs heating at a constant output until the first condition is satisfied when the operation is restarted, and a signal from the outlet sensor after the first condition is satisfied. A continuous electric heating device that switches to automatic control that controls the output based on. [Selection diagram] Figure 1【課題】運転再開機能を備える通電加熱装置および方法の提供。【解決手段】複数の電極体23および複数のスペーサ管体24を有し、それらの内壁が食品材料を流動移送させながら通電加熱するための加熱流路を形成する通電加熱装置20と、加熱流路の入口付近に設けられた入口温度センサ31と、前記電極体に設けられた電極温度センサ32と、加熱流路の出口付近に設けられた出口温度センサ33と、通電加熱装置の出力を制御する制御装置30と、を備え、前記制御装置が、運転再開時に第1条件が満たされるまで一定出力で加熱を行う第1加熱と、第1条件が満たされた後、前記出口センサからの信号に基づき出力を制御する自動制御に切り換える連続式通電加熱装置。【選択図】図1