The utility model discloses a magnetic force driving type reaction kettle, including reation kettle body, kettle cover, magnetic stirrers, (mixing) shaft and stirring vane, the cover has the ring thermostat tube on the (mixing) shaft, the right side and the left side of ring thermostat tube are connected with inlet tube and outlet pipe respectively, the constant temperature water tank includes coolant tank and heating the water tank, coolant tank's left side is passed through the connecting pipe and is connected with solenoid control valve cooperation and first circulating pump, heating the water tank's left side is passed through the connecting pipe and is connected with cooperation of the 3rd solenoid control valve and second circulating pump, first circulating pump cooperates and advances water piping connection through connecting pipe and tee bend with the second circulating pump, coolant tank coordinates through the 2nd solenoid control valve, fourth solenoid control valve, connecting pipe and tee bend respectively and play water piping connection with heating the water tank's right side, heating the water tank's inner chamber bottom still is provided with heating device. This reation kettle simple structure, the practicality is higher.