The invention provides a pipeline scale detection system and method and an electric appliance with steaming function, which relate to the technical field of intelligent electric appliances. The systemis used for electric appliance with steaming function, comprising a controller and a scale detector connected with the controller. The water scale detector is arranged in the steam pipeline part of the steam function electric appliance, and is used for detecting whether the steam pipeline has water scale; and sends the detection signal to the controller; the controller is used for receiving the detection signal and judging whether the detection signal is an indication signal indicating that there is water scale in the steam pipeline. If so, a prompt message is generated according to a presetprompt to prompt the user to remove the scale. The pipeline scale detection system provided by the invention The method and the steam function electric appliance can prompt the user to remove the water scale when judging the water scale in the steam pipeline, effectively avoid the phenomenon of insufficient steam caused by the pipe scaling, and contribute to the performance of the steam function electric appliance to embody greatly, enhance the intelligent scientific and technological sense of the product, and enhance the experience degree of the user.