Abstract: Protected cultivation in winter has been the main cropping pattern of Chinese chives in north China. The chive maggot, Bradysia odoriphaga(Diptera: Sciaridae), is the major pest that damages Chinese chives. [Objective] To definite the occurrence regularity of B.odoriphaga in different protected cultivations and explore the main occurrence environmental factors. [Method] we monitored the annual occurrence of B. odoriphaga, the environmental temperature and humidity in 3 main protected cultivations of Chinese chives in Shandong Province. [Result]The occurrence results showed that there was significant difference in occurrence among small, middle arch shed, and sunlight greenhouse of B.odoriphaga during cultivation. In small arch shed, B.odoriphaga did the least loss. In the early period of covering with plastic film (the middle December), there was the only one period in which resurgent overwintering larvae occurred seriously; In middle arch shed, B.odoriphaga did less loss, the resurgent overwintering and first generation larvaes occurred seriously in the early period and late February, respectively; In sunlight greenhouse, B.odoriphaga occurred once a month which did the most serious loss. In dormant period after turning over, B.odoriphaga occurred seriously in spring and autumn, but lighter in summer. The results of environment monitoring showed that it was sunlight greenhouse, middle and small arch shed in order of soil temperature from high to low, and the soil temperature not humidity was the main factor which influenced the occurrence of B.odoriphaga in the 3 kinds of protected cultivations. [Conclusion] The study provides the theoretical support for the occurrence prediction and control strategy of B.odoriphaga in 3 main protected cultivations of Chinese chives in Shandong Province.