Abstract: The development courses of forest ecosystem health theory were reviewed, and tbe connotations, restoration, and reconstruction were discussed systematically. Based on the summary of the practice of alien forest health, some main factors which have effects on forest health have been pointed out, for example human activities, simplification of habitat and fragmentaliou of forest systetn, management modes of forest, natural disturbance, invasion of exotic species, environment pollution, and forest biological disaster and so on. The main problems existing in forest health of our country were analyzed in detail. According to the structure, function, current situation, and health status of our country forest ecosystem and the micro strategy goal of forest ecological construction, more pertinence research activities should be carried out for such a forest health link. as follows., construction and reconstruc tion. transformation and restoration, production management and utilization, and prevention forest pests. In the meantime, sustainable controlling forest pests, improving immunity ca pacity of forest ecosystem, preventing air pollution and forest fire, and decreasing forest biological disaster due～o environment factors should be impletnented.