Space Medical Challenges and Countermeasures in Long-term Manned Spaceflight

Aiming at the key space medical problems in long-term manned space flight and interplanetary exploration,such as biological effects of radiation,physiological effects of microgravity,disease hazards,psychological and behavioral problems etc,based on synthetic analysis of research developments at home and abroad,medical and technical challenges of long-term manned spaceflight to be faced with were discussed.The research emphases and the strategy of countermeasure were proposed.The development and challenge of China's manned spaceflight project was also looked forward to.