To reveal the regulation mechanism of spatial arrangement and flowering dynamics of plant flowers and the ecological strategy of avoiding geitonogamy, we observed and analyzed the morphological structure, flowering dynamics and pollination biology of the inflorescence of Beesia calthifolia (Maxim.) Ulbr. The results show: (1) the structure of inflorescence of B. calthifolia is elaboration and there are units of cyme composed of three flowers arranged in sequence on the main inflorescence axis. The long distance between the units is not suitable for insects foraging by crawling. (2) The racemes of B. calthifolia opening one by one from the base to the top and the top flowers on a single cyme opening first (usually the top 6-8 cymes open at the same time) prevent blooming of a large number of singleflowered inflorescences as far as possible. (3) Flower is white and its pollen is the only attractant for pollinators. As the most important pollinating insect of B. calthifolia, Baccha maculata can forage pollen by selecting filaments as force point. After foraging a single flower in one inflorescence, they turn to another inflorescence soon. Therefore, the space design and flowering time dynamics of inflorescence of B. calthifolia can reduce the frequency of insect visiting different flowers on one plant as low as possible.