The invention belongs to the field of agricultural agents and particularly provides plant trapping composition for fruit fly pests and a preparation method of the plant trapping composition. The plant trapping composition is prepared from main components as follows: melaleuca bracteata leaves, herba asari, rhizoma acori graminei and flos caryophyllata. The plant trapping composition adopts natural plant components, is non-toxic and pollution-free, is safe to human, livestock and the environment, can trap various male and female fruit flies and has significant effects.