In order to assess insecticidal activities of the essential oils from Tephrosia purpurea leaves, T. purpurea barks and T. purpurea seeds against Rhizopertha dominica, the repellent, contact, fumigant and population inhibition toxicity of the three kinds of essential oils to R. dominica were determined respectively. The results showed: 1) Repellent rate reached to the maximum value with the corresponding repellency percentage of 82.3%, 90.7% and 94.3% after 48 h treatment; 2) All the three kinds of essential oils had exhibited contact toxicity against the 5-day old nymph of R. dominica after 24 h treatment, with the value of LD50 being 25.0，27.9 and 27.8 mg/insect respectively; 3) Fumigant activity to the adult was examined after 48 hours' exposure to each of the three kinds of essential oils at the concentration of 10.0 g/m3; Their mortality ranged from 56.2% to 57.4%, and there was no significant difference among the mortality to the three kinds of essential oils; 4) At the dosage of 200 mg essential oils per 100 g paddy; the current population inhibition rate of the three kinds of essential oils against R. dominica population was 45.5%，53.6% and 76.8% ; F1 progeny population inhibition rate was 43.8%，68.7% and 75.1%, and essential oils from the seeds exhibited more noted population inhibition activity than that of the other two kinds of essential oils.