Abstract: An adjustable pot lid holder comprises a holder base, a first supporting frame, a second supporting frame and a regulating structure. The holder base is fastened to external items by a fixing structure; the first supporting frame is arranged integrally on the holder base; the second supporting frame is moveable assembled on the holder base, used to bear pot lids with the cooperation of the first supporting frame; one part of the regulating structure is arranged on the second supporting frame and the other is arranged on the holder base, used to adjust the distance which gradually decreases from top to bottom between the second supporting frame and the first supporting frame. Adjusting the clamping distance between the first supporting frame and the second supporting frame to clamp the pot lid by the regulating structure, the effect of pot lid holders fitted with pot lids in various sizes is achieved.