The invention discloses a shifting device of a dual-purpose faucet. The shifting device of the dual-purpose faucet comprises a casing, and the casing comprises a water inlet channel, an expanding channel, a transit channel, a reducing channel, a first water outlet channel and a second water outlet channel. A main switch is arranged in the water inlet channel, a control switch is arranged in the second water outlet channel, a movable rod is arranged in the transit channel, a first sealing block attached to the reducing channel is arranged on the wall of the outer side of a first end of the movable rod, a second sealing block attached to the transit channel is arranged on the wall of the outer side of a second end, a flow passing channel with the water inlet end communicated with the water inlet channel and the water outlet end communicated with the transit channel is arranged in the movable rod, and a flow returning through hole is arranged on the second sealing block. Compared with the prior art, alternate blocking of the first water outlet channel and the second water outlet channel can be controlled at the position of the second water outlet channel, the alternate blocking does not need to be operated at the position of the transit channel of the faucet, and operation is convenient. Location distribution of the flow passing channel, the water inlet channel, the transit channel and the first water outlet channel enables the movable rod to be moved flexibly.