The utility model discloses an under well bilateral control dustproof water curtain device. The under well bilateral control dustproof water curtain device comprises a water inlet channel and a water curtain sprayer which is connected on the water inlet channel. The under well bilateral control dustproof water curtain device is characterized in that a first reversing valve before entering a water curtain and a second reversing valve after passing the water curtain are arranged on the water inlet channel, both the first reversing valve and the second reversing valve are three-way valves, a liquid inlet of the first reversing valve is connected with a liquid inlet pipeline, two liquid outlets of the first reversing valve are correspondingly communicated with two liquid inlets of the second reversing valve through hydraulic pipes, a liquid outlet of the second reversing valve is communicated with the water curtain sprayer through a channel, and the first reversing valve and the second reversing valve are controlled to alternatively open and close the liquid outlets and the liquid inlets through corresponding valve cores. According to the under well bilateral control dustproof water curtain device, water spraying can be closed or opened both before and after a person passes a water curtain roadway, so that the occurrence of the situation that the person is wet by the water curtain is avoided, meanwhile, the dependence of a water curtain device to environment is reduced, and thus large area under well popularization and use are benefited.