An air-cleaning decorative humidifier, including mainly a support seat, a water receptacle, at least a shaft, a fan, and a water sub-receptacle; in which a base seat of the water receptacle is fixed to the bottom of the water receptacle; a first water opening is provided on the base seat of the water receptacle; a water valve is provided on the first water opening; the fan and the water sub-receptacle are provided in the support seat; a water level control rod is provided in the water sub-receptacle; the shaft is connected with at least a decoration directly or through a mechanism.