An electric heating smoking system, comprising an aerosol generating apparatus (20, 20a, 20b) and a power source apparatus (10, 10a, 10b) configured for supplying power to the aerosol generating apparatus (20, 20a, 20b),wherein: the aerosol generating apparatus (20, 20a, 20b) comprises a first end and a second end opposite to one another; the first end is provided with a first atomizer (24, 24a, 24b, 24c) configured for heating an aerosol forming substrate to generate an aerosol; the power source apparatus (10, 10a, 10b) is provided with a conductive contact (11, 111a, 111b); the aerosol generating apparatus (20, 20a, 20b) comprises, opposite to the power source apparatus (10, 10a, 10b), a first connection position and a second connection position; wherein the second connection position is configured for keeping a conductive connection between the first atomizer (24, 24a, 24b, 24c) and the conductive contact (11, 111a, 111b); the first atomizer (24, 24a, 24b, 24c) is in non-conductive connection to the conductive contact (11, 111a, 111b) in the first connection position; and the aerosol generating apparatus (20, 20a, 20b) keeps a connection to the power source apparatus (10, 10a, 10b) at both the first connecting position and the second connecting position; wherein guide connection structures are configured on the aerosol generating apparatus (20, 20a, 20b) and the power source apparatus (10, 10a, 10b) for providing a direction guide when the aerosol generating apparatus (20, 10a, 10b) and the power source apparatus (10, 10a, 10b) move between the first connection position and the second connection position; and characterized in that the first atomizer comprises a first smoke circulation path; the aerosol generating apparatus (20, 20a, 20b) comprises a first airflow sensor (27, 27a, 271b) configured for sensing an airflow in the first smoke circulation path; the first airflow sensor (27, 27a, 271b) is in conductive connection to the power source apparatus (10, 10a, 10b) when at the second connection position and in non-conductive connection to the power source apparatus (10, 10a, 10b) when at the first connection position. the aerosol generating apparatus (20, 20a, 20b) comprises a first end and a second end opposite to one another; the first end is provided with a first atomizer (24, 24a, 24b, 24c) configured for heating an aerosol forming substrate to generate an aerosol; the power source apparatus (10, 10a, 10b) is provided with a conductive contact (11, 111a, 111b); the aerosol generating apparatus (20, 20a, 20b) comprises, opposite to the power source apparatus (10, 10a, 10b), a first connection position and a second connection position; wherein the second connection position is configured for keeping a conductive connection between the first atomizer (24, 24a, 24b, 24c) and the conductive contact (11, 111a, 111b); the first atomizer (24, 24a, 24b, 24c) is in non-conductive connection to the conductive contact (11, 111a, 111b) in the first connection position; and the aerosol generating apparatus (20, 20a, 20b) keeps a connection to the power source apparatus (10, 10a, 10b) at both the first connecting position and the second connecting position; wherein guide connection structures are configured on the aerosol generating apparatus (20, 20a, 20b) and the power source apparatus (10, 10a, 10b) for providing a direction guide when the aerosol generating apparatus (20, 10a, 10b) and the power source apparatus (10, 10a, 10b) move between the first connection position and the second connection position; and characterized in that the first atomizer comprises a first smoke circulation path; the aerosol generating apparatus (20, 20a, 20b) comprises a first airflow sensor (27, 27a, 271b) configured for sensing an airflow in the first smoke circulation path; the first airflow sensor (27, 27a, 271b) is in conductive connection to the power source apparatus (10, 10a, 10b) when at the second connection position and in non-conductive connection to the power source apparatus (10, 10a, 10b) when at the first connection position.