Abstract: Objective  To elucidate the pattern of emergence, calling, mating, and oviposition of Cricula variabilis, and provide references basis for the study on sex pheromones and ecology-friendly monitoring and controlling of this insect. Method  The late-instar larvae were collected and bred in laboratory. Observation of the emergence and reproductive behavior of the adults were conducted, and relevant data were analyzed. Result  Significant differences were found in the sex ration of emerged adults and in the number of occurrence in dark and light period. Adult emergence occurred throughout the day, amongst all male adult 78.49% emerged in the dark period, whereas 91.01% of female emerged in the light period. The emergence date of male was earlier than that of the female. Female calling occurrence peaked at 5:30−11:30 and the mating occurrence peaked at 7:00−10:30. The calling behavior of females was begun at the 1-day-old, which was the most vigorous. Female reproductive vigor was negatively correlated with the age. The average lifespan of female was greater than that of male under the same reproductive conditions, but there was no significant difference in the lifespan between male and female adults. Both mated and virgin adults could lay eggs, but mated female possessed higher eggs number, oviposition rate and duration. Conclusion  Emergence of female C. variabilis mainly occurs during the day, and emergence of male mainly occurs at night. The adult’s calling, mating and other behaviors mainly carry out in the dark period. The reproductive behavior of female in early emergence is more active.