The invention discloses an automatic temperature-controlled coffee bean roaster, which comprises a housing, an air inlet, a heating net, a detection probe, a control box, a power switch, a temperature signal transmission module and a baking box; fan, and a heating net is installed on the upper side of the intake fan, a motor is installed in the housing, a temperature sensor is installed in the heating net, a feed inlet is provided on the upper side of the baking box, and a feeding port is installed on the lower side of the baking box. A discharge port is installed, a compound gas shuttle plate is installed in the baking box, and a temperature detector is installed on the upper side of the compound gas shuttle plate, a motor is installed in the housing, and a heat exchange hole is installed on the upper side of the baking box , a control display screen is installed on the surface of the control box, and a power switch is installed on the lower side of the control display screen. In the present invention, a detection probe is installed in the roasting box, which can transmit more than 250 times in 1 second, so as to identify the temperature and heat and ensure the uniform roasting of coffee beans.