The invention discloses a rotatable material distributing valve device for coal mine gangue paste body filling and an operation method and belongs to the field of coal mine gangue paste body filling.The rotatable material distributing valve device comprises a rotating valve, a mining reversing valve and a valve hydraulic driving device; the mining reversing valve and the valve hydraulic driving device are connected to the upper end of the rotating valve, and the mining reversing valve is located on one side of the valve hydraulic driving device; the mining reversing valve is used for drivingthe rotating valve for reversing by manually connecting the valve hydraulic driving device; or an electromagnetic valve of the valve hydraulic driving device is used for connecting the valve hydraulicdriving device to drive the rotating valve for rotating and reversing. The rotatable material distributing valve device has the advantages of being compact in structure, resistant to abrasion, resistant to high pressure, good in sealing performance, convenient to disassemble, assemble and maintain, easy to operate and capable of saving labor. Firstly, in-site and remote control is achieved, in-site overhauling and remote control of a center control room are facilitated; secondly, under a high-pressure work condition, leakage is also avoided; thirdly, the structure is simple, the using amountof parts is small, and the fault rate is greatly reduced; and fourthly, using in a narrow and small space can be achieved, installing is convenient, and unattended operation is achieved.