The present invention provides a plumbing fixture fitting with a diverting system.

A faucet comprises a faucet body and a locking assembly. The locking assembly is connected to the faucet body, and the locking assembly is configured to pass through a mounting hole of a countertop. At least part of the locking assembly is configured to be controlled to abut a lower side of the countertop, and the faucet body comprises a faucet housing, a support frame, and a valve. The support frame is disposed in the faucet housing, and the support frame is configured to be supported on an upper side of the countertop. The support frame is connected to the locking assembly, and the support frame forms a valve seat configured to be connected to the valve. The locking assembly comprises an operating member rotatably disposed on the support frame, and the operating member is configured to control the locking assembly to abut the lower side of the countertop.