The effects of four key process parameters including the type of extractant， solid-liquid ratio， extraction time and ultrasonic power on the oil and fat of black soldier fly larvae were investigated with single factor experiments to study and determine the technology of using microwave-ultrasonic synergistic extraction to extract oil from black soldier fly larvae. Taking the oil yield and energy conversion rate as indicators， orthogonal experiments were used to optimize the technological conditions for the extraction of oil from black soldier fly larvae by microwave-ultrasonic synergistic solvent. The results showed that the ideal solvent for microwave-ultrasonic extraction of black soldier fly larvae oil was petroleum ether. The condition optimized was the extraction time of 25 min， the solid-liquid ratio of 1∶25， and the ultrasonic power of 150 W. Under the condition optimized， the oil of the yield was 41.43%， and the energy conversion rate was 56.79%. However， different parameters of process had no significant effect on the thermal stability and functional group composition of the oil within the range of experimental factors. The fatty acids in the oil of black soldier fly larvae were mainly linoleic acid （19.03%）， oleic acid （16.66%）， lauric acid （14.92%） and palmitic acid （11.9%）.