The invention discloses an anti-clogging window type fresh air system. The anti-clogging window type fresh air system comprises an air inlet device and an air outlet device. The air inlet device comprises a shell, one side of the shell is provided with an air inlet plate, the air inlet plate is provided with a plurality of air inlets, and the side, away from the shell, of the air inlet plate is provided with a cleaning device. The cleaning device comprises a cleaning plug, and the cleaning plug is fixed to a cleaning plate. The anti-clogging window type fresh air system has the beneficial effects that through the arrangement of the cleaning plug, the outdoor air inlets can be cleaned irregularly according to the will of users, and therefore the service life of the whole anti-clogging window type fresh air system is greatly prolonged; and through the arrangement of a first filtering layer, a second filtering layer and a third filtering layer, the degree of cleanliness of indoor air is greatly increased through three layers of filtering, and the healthy degree of the users is increased.