The present disclosure relates to an exemplary atomizer for coupling with a power supply to form an electronic cigarette. The atomizer includes a liquid supply and a connecting component. The liquid supply is configured for storing tobacco liquid. The connecting component is configured for connecting the liquid supply and the power supply. The connecting component includes a liquid conducting element and a heating element in contact with the liquid conducting element. The connecting component has a first end and an opposite second end. The first end is configured for connecting the liquid supply, and the second end is configured for connecting the power supply. The liquid supply is detachably engaged with the connecting component by snap fit.