An electronic cigarette, an atomizer and control method thereof are provided. The atomizer includes a housing defining a gas passage and an accommodation space communicated with the gas passage, an atomizing unit arranged in the accommodation space and configured to generate aerosol passing through the gas passage for user, a detecting unit arranged in the gas passage and configured to detect a gas flow quantity in the gas passage and a control unit electrically connected to the detecting unit and configured to adjust an atomizing quantity of the atomizer according to the gas flow quantity detected by the detecting unit.
