A wireless power supply and electric control system for a toilet seat cover comprising: a seat cover assembly comprising a seat and a cover which is controllable to move pivotally relative to the seat so that the cover is in a closed state or a lifted state relative to the seat , wherein when the cover is in the closed state relative to the seat , the cover covers the seat , while when the cover is in the lifted state relative to the seat , the cover doesn't cover the seat so that the seat is exposed; an electric device which is provided in the seat cover assembly , wherein the electric device comprises an electric control unit and at least one electric assembly ; the electric control unit is adapted to transmit an electrical control signal to the at least one electric assembly to actuate the at least one electric assembly ; and a direct current power supply device which is provided in the seat cover assembly and is electrically connected to the electric device , wherein the direct current power supply device comprises at least one rechargeable battery which is adapted to supply power to the electric device for operation; wherein the seat cover assembly comprises a cover main body , and the at least one rechargeable battery is detachably provided in the cover main body ; wherein the cover main body comprises a battery compartment for accommodating the at least one rechargeable battery so that the at least one rechargeable battery is detachably installed in the battery compartment ; wherein the at least one rechargeable battery comprises a waterproof ring provided around an outer surface of the at least one rechargeable battery ; when the at least one rechargeable battery is installed in the battery compartment , the waterproof ring is sandwiched between the outer surface of the at least one rechargeable battery and an inner wall of the battery compartment . a seat cover assembly comprising a seat and a cover which is controllable to move pivotally relative to the seat so that the cover is in a closed state or a lifted state relative to the seat , wherein when the cover is in the closed state relative to the seat , the cover covers the seat , while when the cover is in the lifted state relative to the seat , the cover doesn't cover the seat so that the seat is exposed; an electric device which is provided in the seat cover assembly , wherein the electric device comprises an electric control unit and at least one electric assembly ; the electric control unit is adapted to transmit an electrical control signal to the at least one electric assembly to actuate the at least one electric assembly ; and a direct current power supply device which is provided in the seat cover assembly and is electrically connected to the electric device , wherein the direct current power supply device comprises at least one rechargeable battery which is adapted to supply power to the electric device for operation; wherein the seat cover assembly comprises a cover main body , and the at least one rechargeable battery is detachably provided in the cover main body ; wherein the cover main body comprises a battery compartment for accommodating the at least one rechargeable battery so that the at least one rechargeable battery is detachably installed in the battery compartment ; wherein the at least one rechargeable battery comprises a waterproof ring provided around an outer surface of the at least one rechargeable battery ; when the at least one rechargeable battery is installed in the battery compartment , the waterproof ring is sandwiched between the outer surface of the at least one rechargeable battery and an inner wall of the battery compartment . <EOS>