The invention provides a voice control differential pressure balance type switch for a horizontal well. The voice control differential pressure balance type switch is applied to water control and oil stabilization during exploiting an oilfield and an oil well in a layering way. The voice control differential pressure balance type switch comprises a driving device, a differential pressure balance type switching valve and a stratum hydraulic channel. An underground switch and a signal receiving device are fallen into a shaft along a pipe column; the production well is divided into three to four sections, and then a sealing device is actuated; after receiving an action order of opening or closing, a power source provides service to a direct-current servo motor set; a push-pull rod and a piston are driven through driving devices; two sealing rings are arranged at the upside and underside of the piston for bearing pressure of 20Mpa; the stratum liquid flows into pores on a lower connecting sleeve and an upper connecting sleeve through a long radial groove on a liquid inlet base, and then enters into small holes on an upper connection sleeve and a lower connection sleeve to flow into the switching valve; and the piston upwards or downwards slip until the complete opening or closing is achieved. The voice control differential pressure balance type switch has the effect that the conditions of oil output and water outlet in each layer can be determined by analyzing the variation of the water flow on the ground; after determining the conditions of the geology of the sections in each production layer, an oil output layer is opened, and a main water outlet layer is closed, thus achieving the production with layer exchanging.