The regulatory requirements for the minimum unstick speed test flight come from past aviation accidents. Its evolution reflects the importance of flight safety and the improvement of technical requirements. The minimum unstick speed test flight is a technical means to enhance flight safety, but it also brings extremely high risks to the test flight itself. The determination of thrust-to-weight ratio and the choice of flight test strategy will have a great impact on the safety of flight test. This paper sorts out the requirements of airworthiness, summarizes the test flight method design technology, helps to reduce the test flight risks effectively, and can be used as a reference for the minimum unstick speed test flight of civil aircraft.