Abstract: Ground test facilities to validate astronauts′ suit must be built in order to achieve the Extravehicular activity.The article describes the system design and its capability index,also presents the practical process curve of astronauts Extravehicular activity.It is indicated by the result that the ground test facilities can suffice the request of Ex-vehicle activity test.The space environment capacity has been stepped up by the conclusion,and the ability of sequential manned space environment in ground has also been guaranteed.