The invention provides a novel cable well lid. The novel cable well lid is simple in structure and convenient to open, and connection reliability of the well lid is improved. The novel cable well lid comprises a lid frame, an upper lid, a lower lid and an interlocking mechanism, wherein the center of the lid frame is provided with a first stepped hole, a second stepped hole and a third stepped hole, the first stepped hole, the second stepped hole and the third stepped hole become smaller gradually from top to bottom, the upper lid is arranged in the first stepped hole in a matched mode, the center of the upper lid is provided with a containing hole, the lower lid is arranged in the second stepped hole, and the center line of the upper lid and the center line of the lower lid are consistent with the center line of the first stepped hole; the interlocking mechanism comprises an interlocking assembly and a plurality of sliding grooves, the interlocking assembly comprises a turnover lid, a straight-stroke elastic assembly and a plurality of rotating assemblies, the turnover lid is hinged to the upper lid and used for sealing and covering the containing hole in the upper lid, the straight-stroke elastic assembly comprises a center rod, a center spring and a plurality of push-press mechanisms, and each rotating assembly comprises a vertical rod, a sleeve and a sliding rod. Connection reliability of the well lid is ensured, and potential safety hazards are avoided.