What is claimed is:1. A smart lighting system comprising:a) an illuminating device havingi) one or more switchable controllers;ii) a switching circuit for providing switchable power to the illuminating device; andiii) a processing circuit, coupled to the switching circuit, wherein the processing circuit is configured by the one or more switchable controllers to instantly turn-ON or turn-OFF the illuminating device when receiving a switching signal, wherein the processing circuit is configured to instantly turn-OFF the illuminating device when detecting an initial power-up signal; andb) a voice command receiver signally coupling with the illuminating device, wherein the voice command receiver is configured to identify a user's voice switching command and generate the switching signal to turn-On or turn-OFF the illuminating device in responding to the user's voice switching command.2. The smart lighting system of claim 1, wherein the illuminating device comprises an user interface having a switch to control the one or more switchable controllers.3. The smart lighting system of claim 2, wherein the user interface comprises an ON/OFF physical switch.4. The smart lighting system of claim 2, wherein the user interface comprises a push button switch.5. The smart lighting system of claim 2, wherein the user interface comprises a rotary switch.6. The smart lighting system of claim 1, wherein the illuminating device comprises a LED, an incandescent light bulb, a light tube, or a CFL bulb.7. The smart lighting system of claim 1, wherein the voice command receiver comprises a smart home device.8. The smart lighting system of claim 1, wherein the voice command receiver is signally coupled with a smart home controlling hub.9. The smart lighting system of claim 1, wherein the voice command receiver is configured to generate signals simulating a predetermined number of power switches of a wall switch.10. The smart lighting system of claim 1, wherein the voice command receiver is configured to generate a predetermined number of power switches of a wall switch in responding to the identified user's voice switching command.11. A smart lighting device comprising:a) two or more switchable positions corresponding to at least two respective illuminating statuses; andb) a processing circuit, configured to receive switch instruction signal from a voice command receiver, wherein the processing circuit is configured by a switchable controller to instantly energize or de-energize an illuminating component based on the switch instruction signal, wherein the switch instruction signal comprises a predetermined number of power switch generated in response to a voice command received by the voice command receiver, wherein the processing circuit is configured to instantly turn-OFF the illuminating device when detecting an initial power-up signal.12. The smart lighting device of claim 11, wherein the illuminating component comprises a light bulb.13. The smart lighting device of claim 11, wherein the at least two respective illuminating statuses comprises ON and OFF.14. The smart lighting device of claim 11, wherein the voice command receiver comprises an artificial intelligent software to control the illuminating device based on an environmental condition.15. A method of controlling a lighting device comprising:a) defining each of lighting states of an illuminating component of the lighting device based on a user's setting of switchable positions on the lighting device, wherein each of the switchable positions corresponds to at least one of power switches;b) energizing or de-energizing the illuminating component based on a detected power switch that corresponds to the user's setting of the switchable positions; andc) generating a control signal corresponding to a predetermined number of the power switches by a voice command device, wherein the control signal is configured to instantly turn-OFF the illuminating component when detecting an initial power-up signal.16. The method of claim 15, further comprising performing a voice command to switch ON or OFF the illuminating device on a smart phone.17. The method of claim 15, wherein the energizing or de-energizing comprises turning ON or OFF of the illuminating component.18. The method of claim 15, wherein the defining each of the lighting states is performed by using a user interface on a light bulb or light tube.19. The method of claim 18, wherein the user interface comprises an ON/OFF switch.20. The method of claim 18, wherein the user interface comprises multiple switches.21. A smart light system comprising:a) a receiver coupled with a power source and configured to receive a control signal from a voice command device;b) a transmitter coupled with the receiver and convers the control signal received at the receiver to a switch signal; andc) one or more lighting devices, wherein each of the lighting devices contains a setting switch for defining the illuminating status corresponding to a predetermined power switch number, wherein the setting switch is configured to instantly turn-OFF the illuminating component when detecting an initial power-up signal.22. The smart light system of claim 21, wherein the receiver is structured to be installed on a wall.23. The smart light system of claim 21, wherein the receiver is configured to receive a wireless control signal from an IoT (internet-of-thing) device.24. The smart light system of claim 21, wherein the voice command device comprises a smart phone.25. The smart light system of claim 21, wherein the smart light system comprises an artificial intelligent software.26. The smart light system of claim 25, wherein the artificial intelligent software determines a light status based on each user's specific preference.27. The smart light system of claim 25, wherein the artificial intelligent software determines a light status based on an environmental condition.28. The smart light system of claim 27, wherein the environmental condition comprises a time of a day.29. The smart light system of claim 25, wherein the artificial intelligent software determines a light status based on event occurring in a building.