Underground layering connection valve and switch of same

The utility model discloses an underground layering connection valve and a switch of the same, which are used in oil industry and can be used for underground operation of layering sand prevention, layering acid treatment and layering mining work of an oil-water well. The underground layering connection valve comprises a valve body upper connector, a valve body, a valve body lower connector and a valve core. The valve body is provided with a communication groove, the valve core is installed in the valve body, and two ends of the valve body are respectively connected with the vale body upper connector and the valve body lower connector. The switch of the connection valve comprises a double female upper connector, a central pipe and an elastic switch, the elastic switch is in screwed connection with a lower press ring to be sleeved on the central pipe, the upper portion of the elastic switch is sleeved in an upper press ring, and two ends of the central pipe are respectively connected with the double female upper connecter and the lower connecter. The switch of the connection valve is connected with the connection valve to finish switch operation of the connection valve. The connection valve is provided with the communication groove with large groove holes, thereby being capable of meeting requirements of constructions with large output value and being widely used in opening and closing wok of oil wells, water wells, high-inclination wells and horizontal wells. An inner tubular pipe is used for lifting or lowering the connection valve, so that the connection valve is reliable in work and ensures success ratio of construction.