Abstract: To provide theoretical foundation for the manufacturing of mechanical trapping devices of locusts induced by light， the tests were performed to investigate the influence of light and air\|suction on locusts phototactic sliding trap effect， using the testing device of the phototactic slipping of locusts and trapping behavior effect stimulated by light and air\|suction， and analyze the reason of locusts phototactic response to discuss the mechanism of locusts phototactic sucking and slipping capture. The results showed that it was the premise of locusts phototactic response that photo\|induction information can stimulate locust visual system to orient to optical target effectively， and it was the cause of locusts phototactic response that flashing and alternating light regulates locusts behavior orientation correctly to strengthen locusts phototactic sensibility and stimulate the locusts visual behavior acuity. Moreover， after arousing locusts phototactic visual activity stimulated by light effectively， the polarized light of the flashing and alternating light characteristics intensified the sensibility of locusts phototactic behavior response， and the weaker sensitivity of locusts phototactic response to polarized light of constant light characteristics could be enhanced through increasing light intensity. The good realization of the phototactic locusts entering the trapping channel sucked by the sucking wind speed of 6 m·s-1 at capture inlet needs the stimulation of the locusts phototactic sensitivity behavior， and the synergistic effect of the suction effect at 0-50 mm was significant. Simultaneously， the suction effect could effectively stimulate locusts phototactic regulatory sensitivity controlled by the biological friction effect， to accelerate to realize locusts phototactic sliding capture behavior. Furthermore， the polarized light， formed by 15° inclined regulating light with 33 Hz flashing and 640 ms alternating light passing through ordinary glass， with the sucking wind speed of 6 m·s-1 at capture inlet， can effectively promote the phototactic visual sensitive response， weaken locust sliding friction control effect， enhance the regulation intensity of locusts phototactic trapping behavior， and beneficiate locust phototactic trapping effect， which result in the phototactic capture rate of 85%.

Key words: Locusta migratoria, light\, suction stimulation, phototactic response, air suction, phototactic trapping behavior