Air treatment system and control method thereof

The invention discloses an air treatment system and a control method thereof, and relates to the technical field of indoor air conditioning, and the air treatment system comprises a main machine, an air inlet, an air outlet and a fan for driving air flow to flow from the air inlet to the air outlet; the air conveying pipeline is communicated with the air outlet of the main machine and is used for conveying airflow blown out of the air outlet of the main machine to a preset indoor space; the negative ion generator is arranged at an outlet of the air conveying pipeline; the airflow guide part is arranged at an outlet of the air conveying pipeline and used for guiding airflow containing negative ions to a preset position of a preset indoor space; the air quality detection device can detect the concentration of negative ions; the main machine and/or the airflow guiding component can be automatically adjusted or manually adjusted by a user so that the concentration of the negative ions conveyed to the preset posit