The utility model discloses a prepayment controller. The prepayment controller comprises two circuit breakers, a switching-on indicator light, a switching-off button, a switching-on button, a first intermediate relay and a second intermediate relay, and is characterized in that the two circuit breakers are connected with a live line L and a null line N respectively, the first pair of normally open contacts of the second intermediate relay is connected with an electricity meter contact in parallel and then connected with the circuit breakers, the circuit breakers are connected with the normally closed contact of the first intermediate relay and the second pair of normally open contacts of the second intermediate relay through wires, the normally closed contact of the first intermediate relay is connected with the switching-on indicator light and the switching-off button, the second pair of normally open contacts of the second intermediate relay is connected with the switching-off button and the switching-on button, the switching-on button is connected with the second intermediate relay, and the first intermediate relay, the second intermediate relay and the switching-on indicator light are connected in parallel and then connected with the circuit breakers. The prepayment controller solves the technical problems that the operation of supplying power again after power interruption is inconvenient and use is influenced in the prior art.