The flight test method and flight quality evaluation method are designed for airdrop missions in this paper. The mathematical model of the airdrop system is built based on the movement characteristic of airdrop. By analyzing the response characteristics of the aircraft during the airdrop cargo, the flight quality flight test content of the aircraft was determined to ensure the safety of the airdrop test flight before the airdrop flight test. Take the aircraft attitude control as the target, in the process of airdrop, determine the gravity airdrop and extraction airdrop test status, give the pilot manipulation suggestions,and formulate the table of airdrop process evaluation elements. Finally, the flight quality flight test design and evaluation technology for the airdrop mission was formed. This technology provides technical support for verifying the capability of the aircraft airdrop mission.