An oil-pressure supply device includes an oil-pressure control portion, a first filtration portion which traps foreign materials in oil before a mechanical pump, a second filtration portion which traps foreign materials in oil before an electric pump, a first branch passage provided between the mechanical pump and the first filtration portion, a second branch passage provided between the electric pump and the second filtration portion, a third branch passage provided between a discharge port of the electric pump and the oil-pressure control portion, a fourth branch passage through which surplus oil is discharged, a switching portion set at a first position where the first branch passage is connected to the third branch passage when the first filtration portion is recovered, or set at a second position where the second branch passage is connected to the fourth branch passage when the second filtration portion is recovered.