A seal disengagement test system for a turbine oxidizer pump of an engine, includes a test console. The test console includes a pneumatic booster pump, a piping system, and control valves. The pneumatic booster pump is configured to charge nitrogen gas from a nitrogen gas source into a nitrogen storage device for pre-storage. The piping system is configured to connect the nitrogen storage device to a pump chamber of a turbine oxidizer pump to-be-tested to form disengagement test channels, the disengagement test channels comprising an airtight-path channel and a disengagement-path channel. The control valves are disposed on pipelines of the disengagement test channels, respectively. The control valves include an airtight-path pressure regulating valve configured to adjust a pressurization rate during an airtight test, a disengagement-path pressure regulating valve configured to control pressure and a pressurization rate during a disengagement test, and a pressure relief valve.