Abstract: The paper discussed the features and the objectives of thermal-vacuum test for manned spaceflight based on the investigation of foreignexperience,15 thermal-vacuum tests divided into three types havebeen proposed.The necessity of thermal-vacuum test on a complete mannedspacecraft is also discussed;and proposal a single module or more inconnection under the simulated environment condition both inside and outsidethe module are suggested.The paper also discussed the distinguished featureand the application of manned spacecraft thermal-vacuum tests,and thespecial devices needed for astronauts that should be attached to the satellitetest facility in order to meet manned spaceflight test requirements.