The invention discloses a water heater end touch sliding temperature regulation and control system based on power line carrier communication, and belongs to the field of constant-temperature wall-hanging stoves. According to the problem that an existing water heater cannot quickly and accurately rise and fall to a certain temperature value during continuous warming and cooling, a touch sliding keyis adopted to regulate and control the temperature of the water heater. The touch sliding key is arranged on the water heater, a sliding command sent by the touch sliding key is an analog signal, thetouch sliding key can be arranged to be an annular shape or a vertical bar shape, if a circular ring sliding for a round is defined as 0-1000, and a position signal changes to 1000 uniformly from 0 in the sliding process, so that different keys are expressed by different values; an effect of the continuous warming and cooling to the precise temperature value is realized; and the water heater canfurther communicate with external equipment through a power line carrier communication module, and the external equipment regulates and controls the temperature of the water heater through common keys.