Based on a three-year observation for strongfragrant loosestrife under cultivated condition, we have analysed its growth and accumulation of its dry-matter, expounded the relationship between the development "of this grass and ecological factors, such as light, temperature and water, etc. In this paper,a series of cultivation measures have been proposed which will be of some reference values for introducing, manuring, management and harvesting of strongfragrant loosestrife. And the observation methods we us...