[Objectives]  To clarify the courtship behavior of Drosophila suzukii, the role of vision and crude pheromone extracts in courtship behavior. [Methods] A series of behavioral experiments were conducted under indoor conditions [temperature (24±1) ℃、relative humidity 65%±5%，photoperiod 14L︰10D] to determine the courting behavior characteristics of D. suzukii. [Results]  The courtship behavior characteristics of males are as follows: when the female and male meeet before or when they meet, the end of the female's abdomen is raised, males approached females, following them and performing a wing scissoring display ; When the female is statinary, the male spreads and vibrates in front of the female, then the male circles around the side of the female, touches the female with the front feet and quickly returning to his former position, then goes around the tail of the female and attempts to mate with his abdomen bent down and forward. The number of courtship behaviors performed per day by female 3 day-old instars (172.4 ± 10.0) was significantly higher than the number performed by younger or older instars , and the courtship peak period [(59.2±5.4)times] observed between 3 h and 4 h after the start of the light-period than during the rest of the light-period. Compared with a sigle factor, the combined action of the female body eluent and the dead body can significantly stimulate the male’s courtship behavior. Futher observatios showed that crude ovarian extracts had a significant attracting effect on unmated males of D. suzukii, but the presence of ovarian extracts alone did not significantly enhance courtship behavior of males. [Conclusion]  Pheromones in the ovaries of D. suzukii females, together with visual cues, play an important role in inducing male courtship behavior.