Pollination originates from inadvertent interaction between plants and insects, and consequently shapes their traits. These attractions of insects are beneficial to both parties in reward pollinations, while in deceptive pollinations, they are supposed to be neutral/antagonistic to insects. However, deceptive pollinations with seemingly evolutionary disadvantage widely exist, especially in Orchidaceae. Here we explore this paradox through dissecting the neural basis preserving the floral attraction of pollinators. We first decoded the perception of the attractive floral odor ethyl tiglate (ET) emitted from orchid C. bardolphianum to implement a Drosophila deceptive pollination. Using the neurogenetic model, D. melanogaster, we unveiled the neural basis underlying the recognition and valence evaluation of ET. Furthermore, we demonstrate that the universal ET-attraction occurs in the pollination of both reward and rewardless orchids and roots in the similar neural basis of various Drosophila pollinators. Consequently, our result suggest that the diverse pollinating interactions share related attractive signals based on the corresponding neural basis of different insects.