We established a new paradigm which enable us study the choice behavior of drosophila facing conflicted cues on the scale of gradually changing position. We proved that drosphila capable of distinguishing of relative position, and there is no overshadowing in compound cues recognition. A temperature-sensitive allele of the Drosophila dynamin gene o shibire shf1 was expressed by using the GAL4/UAS system to disrupt synaptic transmission of dopamingic neuron and ellipsoid body of centre complex and studied the effect on the changing of its choice behavior, it looks like that the dopamingic neuron dterrnined the choice behavior through its synaptics with mushroom body. Elliplsoid body has no effect on choice behavior. We succeed in adding odor supply instruments on flight simulator, and performed the olfactory operate conditioning on drosophila for the first time, and studied the effect of integration of visual learning and olfactory learning. We also want to find the visual learning center of drosophila, so far, we only found it lies in the inner layer of where the GAL4 line c697 expressing. We also found that the early phase of visual memory of drosophila was unstable and easy to be erased by interference signals, but 10 minuts of consilodation enable it to withstand the same strength of interference. We also found the retrieval of the visual memory was affected if the drosophila subjected to a another subsequent visual learning which has common or contrary cue with former learning.