The hydrostatic pressure control device is provided with a switching valve (60) that selectively switches between: communication of an output port oil channel (33), which is connected to the output port (42b) of a linear solenoid valve (SLC1), with a clutch oil channel (34), which is connected to a clutch hydraulic chamber (80); and communication of a discharge port oil channel (36), which is connected to the discharge port (52b) of an electromagnetic pump (50), with the clutch oil channel (34). An accumulator (70), which functions as a damper, is connected to the output port oil channel (33). Because the accumulator (70) is not connected to the path from the discharge port (52b) of the electromagnetic pump (50) to the clutch hydraulic chamber (80) (discharge port oil channel (36), switching valve (60), clutch oil channel (34)), leakage of hydraulic fluid when the electromagnetic pump (50) is driven can be limited. As a result, it is possible to design a smaller electromagnetic pump (50) by designing the transfer capacity of the electromagnetic pump (50) to be adequate for what is required.