The invention discloses an oil feeding and discharging device with an oil feeding and discharging selection function, which comprises a shell, a screw I, a
valve seat, a spring, a support, a one-way valve, an adjusting rod, a seat body, a sealing ring I, a locking
flange, a covering cap
assembly, a lifting valve, a
cam and a sealing ring II, and the one-way valve and the lifting valve enable a product to be in a non-working state, have double sealing effects and prevent oil from leaking outwards; the
cam adjusting rod is rotated to extend out of the outer end face of the lifting valve to abut against the one-way valve, so that the one-way valve is linked with the lifting valve. Otherwise, the
cam is rotated, the adjusting rod is shrunk under the action of the
spring force, and therefore the one-way valve is separated from the lifting valve, and the product is restored to the refueling state. In addition to the traditional pressure oil feeding and discharging functions, the oil feeding and discharging device also has the functions of oil feeding and discharging selection, multiple sealing
modes and quick disassembly and replacement, and product sealing is not influenced when parts are replaced, so that product leakage is avoided, and the safety of an
airplane in the flying process and the ground use process is ensured.