As one of the most important environmental factors, the light condition may influence the performance of development and physiological behavior in insect. The variation of light environment could induced many negative phenomenon, such as diapause, courtship inhibition and lower food consume. The intensive research on the light influences may promote the efficiency in massive rearing and population manipulation of the natural enemy. We focused on the key predacious natural enemy coccinellid Harmonia axyridis, which has been utilized as efficacious biological control agent to suppress various arthropod herbivores at present study to reveal the influences of light intensity, photoperiod and wavelength to the copulatory behavior and fertility by using an animal behavior automatic observation monitoring system. Totally 3 illuminative factors and 17 treatments, included light intensity ( 600 lx、900 lx、1200 lx、1500 lx、1800 lx 及 2100 lx) , photoperiod ( light: dark = 0:24、6:18、12:12、18:6 and 24:0) , and light wavelength ( violet (395 nm) , blue (480 nm) , green (510 nm) ,yellow ( 75 nm) , orange ( 610 nm) and red ( 685 nm) ) were set as different environment conditions respectively. By reviewing the video records, the results showed that: ( 1 ) There are significant differences of each copulatory behavior and fertility between light and dark conditions of H. axyridis; ( 2) the courtship behavior was not