Urban flower box with intelligent induction air purification device

The urban flower box comprises a box body, and dust inlets are formed in the front end face and the rear end face of the box body. According to the device, dust in air can be collected by arranging a dust collecting and soil loosening mechanism, when collection is complete, under the driving of an electric telescopic rod, an insertion plate is vertically downward under the action of gravity and is gradually inserted into soil through the electric telescopic rod, a water outlet plug is opened through sliding contact of the water outlet plug and an arc ring, and the dust in the air can be collected; when the electric telescopic rod moves upwards again, water can be discharged automatically, dust in the air is completely inserted into the soil, the deep watering effect is achieved while the soil loosening operation is conducted, microelements in the soil can be increased by inserting the dust into the soil, the electric telescopic rod only needs to move upwards again, and all the elements can be reset to the ori