The utility model relates to an indoor furred ceiling air purification system, the furred ceiling includes fossil fragments and lead screw, and the lead screw is fixed on fossil fragments, air purification system includes the connecting piece, the retaining member, and the couple, tray, hasp and adsorbate, the connecting piece passing through is on the lead screw, and the connecting piece can rotate and slide by relative lead screw, on the retaining member was provided the lead screw, the retaining member is separable or fastening with the connecting piece, a couple is provided on the connecting piece, on the hasp was provided the tray, on the hasp cover disposed on couple, the adsorbate was provided in the tray. Indoor furred ceiling air purification system utilizes lead screw in the furred ceiling to do to support and set up air purification system, make full use of in the furred ceiling idle hidden space, and simultaneously, air purification system simple structure, light in weight, the will not causes great load for the furred ceiling, influences the dough stability of furred ceiling, when changing the adsorbate, the only need takes off the tray alone can accomplish change, convenient and fast.