A flavored vapor generator (100, 200, 300, 400) used for an electronic smoking apparatus (10) comprises a housing； a liquid retention material (155, 255) which is filled, soaked or immersed with a flavored liquid and received inside the housing； an electric heater (150, 350, 450) for heating the liquid retention material (155, 255) to generate flavored vapor； and a sensor (156, 356, 456) for monitoring soaking or wetness conditions of the liquid retention material (155, 255) and providing signals for determining whether the flavored liquid in the liquid retention material (155, 255) is exhausted or almost exhausted.
