On-table mounting structure, bathtub faucet and bathtub waterway controller

The utility model discloses an on-table mounting structure, a bathtub faucet and a bathtub waterway controller. The on-table mounting structure comprises a mounting seat and a first screw joint piece; a mounting hole and a connecting hole are formed in the table top; the mounting seat is provided with a locking part, a water passing part and a mounting part; the locking part is located on the table top and is provided with a through hole; the water passing part extends into the mounting hole and is used for establishing connection with an external water supply component and/or a water consumption component, and a water passing hole is formed in the water passing part; the mounting part is used for mounting the water path structure and allowing the water passing hole to be communicated with the water path structure; the first screw joint piece penetrates through the through hole, is suitable for being in screw joint with the connecting hole and abuts against the locking part. Both the bathtub faucet and the ba