[Aim]  To determine the effect of exposing Calospilos suspecta larvae to LED light of different wavelengths during the dark period on their subsequent growth, development and reproduction. [Methods]  Newly hatched larvae were exposed to LED lights of different wavelengths [red (620-625 nm), yellow (580-585 nm), blue (465-467 nm), and green (520-523 nm)], for 10 h during the dark period, after which their pupation rate, emergence rate, developmental duration, pre-oviposition period and adult longevity, were measured and compared. Pupae were weighed, and the number of eggs laid per female counted. [Results]  (1) Exposure to different wavelengths of LED light had significant effects on the pupation and emergence rates of C. suspecta (Pupation rate: P < 0.001; Eclosion rate: P = 0.027). The blue LED group had the lowest pupation rate (64.00%), and green LED group had the lowest emergence rate (89.55%). (2) Larval duration was prolonged by exposure to LED lights, and female larval duration was longer than male larval duration. Diapause pupal duration was shortened by exposure to LED light, especially yellow LED light. (3) Pupal weight was reduced by exposure to LED light; both female and male pupal weight were least in the blue LED light group, but female pupae were significantly heavier than male pupae (P < 0.05). (4) Exposure to LED light had no significant effect on the pre-oviposition duration of C. suspecta (P = 0.468). However, compared with the control group, the adult longevity of males and females exposed to yellow, blue and green LED light was significantly reduced (P < 0.001). Compared to the control group [(170.6±46.7) grains], exposure to red LED light significantly increased the number of eggs laid per female [(218.1±52.7) grains] (P < 0.001), whereas exposure to blue LED light significantly reduced the number of eggs laid [( 140.9±33.0) grains] (P < 0.001). [Conclusion]  Exposure to LED lights of different wavelengths during the dark period had short-term effects on the larval duration, pupation rate and pupal weight, of C. suspecta. Exposure to LED light also had long-term effects on pupal duration, emergence rate, adult longevity and egg production. Exposure to blue and green LED light inhibited the survival, growth, development and reproduction, of C. suspecta.