三突花蛛在东北地区一年一代，越冬龄期不整齐。在落叶松林内，早春上树捕食害虫。６月中旬后，下迁至林下的灌木丛和草上，在植物叶上做囊产卵。该幼蛛自孵化起至越冬前，不再主动向高树冠部迂移，而仅在灌木、草上及小树上活动。三突花蛛能捕食多种林木害虫，在早春，其种群密度往往高于其它害虫天敌，是一种极有利用前途的天敌。 Three sudden flower spider in the Northeast one generation, overwintering age irregular. In larch forests, trees are preyed on pests in early spring. After mid-June, he moved down to the undergrowth of shrubs and grasses, and laid eggs on the leaves of plants. The young spider from hatching until before winter, no longer take the initiative to high branches of the tree, but only in shrubs, grass and small trees activity. Three kinds of flower spider can predation on a variety of forest pests, in early spring, its population density is often higher than other pests natural enemies, is a natural enemies of great use.